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Atama işleçleri

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expression assignment-operator expression

assignment-operator : biri   =   *=   /=   %=   +=   -=   <<=   >>=   &=   ^=   |=

Açıklamalar

Atama işleçleri, sol işlenen tarafından belirtilen nesnede bir değer depolar. İki tür atama işlemi vardır:

ikinci işlenenin değerinin ilk işlenen tarafından belirtilen nesnede depolandığı basit atama .

sonucu depolamadan önce aritmetik, shift veya bit düzeyinde bir işlemin gerçekleştirildiği bileşik atama .

Aşağıdaki tablodaki işleçler dışında = tüm atama işleçleri bileşik atama işleçleridir.

Atama işleçleri tablosu

İşleç anahtar sözcükleri.

Bileşik atama işleçlerinden üçünün anahtar sözcük eşdeğerleri vardır. Bunlar:

C++ bileşik atama işleçleri için alternatif yazımlar olarak bu işleç anahtar sözcüklerini belirtir. C'de, alternatif yazımlar iso646.h> üst bilgisinde <makro olarak sağlanır. C++ dilinde alternatif yazımlar anahtar sözcüklerdir; <iso646.h> veya C++ eşdeğeri <ciso646> kullanımı kullanım dışıdır. Microsoft C++'da alternatif /permissive- yazım denetimi sağlamak için veya /Za derleyici seçeneği gereklidir.

Basit atama

Basit atama işleci ( = ), ikinci işlenenin değerinin ilk işlenen tarafından belirtilen nesnede depolanmasına neden olur. Her iki nesne de aritmetik türlerdeyse, değeri depolamadan önce sağ işlenen soldaki türüne dönüştürülür.

ve volatile türlerinin const nesneleri, yalnızca volatile veya veya olmayan const volatile türlerin l değerlerine atanabilir.

Sınıf türündeki ( struct , union ve class türlerinde) nesnelere atama, adlı operator= bir işlev tarafından gerçekleştirilir. Bu işleç işlevinin varsayılan davranışı, nesnenin statik olmayan veri üyeleri ve doğrudan temel sınıflar için üye başına kopya ataması gerçekleştirmektir; ancak, bu davranış aşırı yüklenmiş işleçler kullanılarak değiştirilebilir. Daha fazla bilgi için bkz . İşleç aşırı yüklemesi . Sınıf türlerinin kopyalama ataması ve taşıma atama işleçleri de olabilir. Daha fazla bilgi için bkz . Oluşturucuları kopyalama ve atama işleçlerini kopyalama ve Oluşturucuları taşıma ve atama işleçlerini taşıma.

Belirli bir temel sınıftan kesin olarak türetilmiş herhangi bir sınıfın nesnesi, temel sınıfın bir nesnesine atanabilir. Türetilmiş sınıftan temel sınıfa örtük bir dönüştürme olduğundan ancak temel sınıftan türetilmiş sınıfa örtük bir dönüştürme olduğundan ters değer doğru değildir. Örneğin:

Başvuru türlerine yapılan atamalar, atama başvuru noktalarının bulunduğu nesneye yapılıyor gibi davranır.

Sınıf türündeki nesneler için atama başlatma işleminden farklıdır. Farklı atama ve başlatmanın nasıl olabileceğini göstermek için kodu göz önünde bulundurun

Yukarıdaki kod bir başlatıcı gösterir; türünde bir bağımsız değişken UserType1 alan oluşturucuyu UserType2 çağırır. Koda göre

atama deyimi

aşağıdaki etkilerden birine sahip olabilir:

bir bağımsız değişkenle birlikte UserType1 sağlanan operator= için UserType2 işlevini operator= çağırın.

Böyle bir işlev varsa, açık dönüştürme işlevini UserType1::operator UserType2 çağırın.

UserType2::UserType2 Bir bağımsız değişken alan ve sonucu kopyalayan böyle bir oluşturucu mevcut olması koşuluyla oluşturucuyu UserType1 çağırın.

Bileşik atama

Bileşik atama işleçleri Atama işleçleri tablosunda gösterilir . Bu işleçler e1 op= e2 biçimindedir ; burada e1 değiştirilemez bir const l-değeridir ve e2 şöyledir:

aritmetik bir tür

veya ise + bir işaretçi -

e1 türü için eşleşen operator *op*= bir aşırı yüklemenin bulunduğu bir tür

Yerleşik e1 op = e2 formu e1 e1 = op e2 olarak davranır, ancak e1 yalnızca bir kez değerlendirilir.

Numaralandırılmış bir türe yapılan bileşik atama bir hata iletisi oluşturur. Sol işlenen bir işaretçi türündeyse, sağ işlenen işaretçi türünde olmalı veya 0 olarak değerlendirilen sabit bir ifade olmalıdır. Sol işlenen tam sayı türündeyse, sağ işlenen işaretçi türünde olmamalıdır.

Yerleşik atama işleçlerinin sonucu

Yerleşik atama işleçleri, atamadan sonra sol işlenen tarafından belirtilen nesnenin değerini döndürür (bileşik atama işleçleri söz konusu olduğunda aritmetik/mantıksal işlem). Sonuç türü, sol işlenenin türüdür. Atama ifadesinin sonucu her zaman bir l değeridir. Bu işleçler sağdan sola ilişkilendirmeye sahiptir. Sol işlenen değiştirilebilir bir l değeri olmalıdır.

ANSI C'de atama ifadesinin sonucu l değeri değildir. Bu, C'de yasal C++ ifadesine (a += b) += c izin verilmediğini gösterir.

Ayrıca bkz.

İkili işleçleri olan ifadeler C++ yerleşik işleçleri, önceliği ve ilişkilendirilebilirliği C atama işleçleri

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Değişkenlerin ve sabitlerin öğrenildiğini varsayarsak bu ifadeler ile mutlaka kullanılacak olan operatörleri de bilmemiz gerekecektir. Bu konuda operatörlere yer vereceğiz. Tüm operatörleri bilme zorunluluğundan bahsetmemiz doğru olmaz. Lakin birçoğu C++ programlama dilinde tercih edilen temel operatörlerdir.

Atama Operatörü (=) - Assignment Operator

Bir değişkene değer atamak için kullanılır. Atama işlemleri her zaman sağdan sola olacak şekilde gerçekleşir.

Basit bir örnek yapmak gerekirse;

Örnekteki yapıya baktığımızda int x (tam sayı x) değişkenine 10 değerini atadık. Hemen sonraki satırında ise int y değişkenimize x değişkenimizin değerini atadık . Sonuç olarak ekranımızda 10 çıktısı gözükecektir.

Kod yapısı incelendiğinde y değişkenine atanan değerden sonra tekrar x değişkeninin değerini almak istersek herhangi bir problemle karşılaşmayız.

Örneğimize baktığımızda y değişkenine x değişkeninin değerini atadık, y değişkenine 5 ekledik ve x ile y değişkenini ekrana yazdırdık. Çıktıyı aşağıda görebiliriz;

Yani başlangıçta belirlediğimiz x değişkeninin değerinde herhangi bir değişiklik yapmadık.

C++ dilinde birden fazla değişkene aynı değeri aşağıdaki gibi atayabiliriz;

Matematiksel Operatörler ( + , - , * , / , % )

Hemen her dilde olduğu gibi matematik işlemleri için kullanılan operatörlerdir. Kabaca;

Bileşik Atama Operatörleri ( += , -= , *= , /= , %= )

Standart atama işlemini gerçekleştirirken işlemleri daha kısa yapabilmek için kullanılır.

Arttırma ve Azaltma Operatörleri ( ++ , -- )

Bileşik atama operatörlerinde yaptığımız işlemleri daha da kısaltabiliriz.

Tablodaki 3 değerde birbirine eşittir.

Arttırma ve Azaltma Operatörlerinde Dikkat!

Bu operatörler kullanılırken dikkat edilmesi gereken ufak bir detay vardır. ++ ve -- ifadeleri belirtilen değişkenden önce ve sonra kullanımına göre farklı sonuçlar elde edilir. Aşağıdaki örneği ve yorum satırlarını dikkatlice inceleyelim.

Çıktılarımızı bir de şöyle görelim;

Yani anladığımız üzere ++ ve -- ifadelerini önce kullanmak ile sonra kullanmak çok farklıdır. Mantığa bakmak gerekirse bilgisayar programı okurken sırasıyla gelir demiştik. Yani ++x ile x değişkenini arttırdı ve y değişkenine atadı. İkinci örneğimizde ise a değişkenini b değişkenine atadı ve a değişkenini 1 arttırdı.

Karşılaştırma Operatörleri ( == , != , > , < , >= , <= )

Bu operatörler yardımıyla karşılaştırma işlemleri yapılmaktadır. İki değer arasından hangisinin küçük, hangisinin büyük olduğu gibi işlemler gerçekleştirilebilir. Sonuçları doğru veya yanlıştır.

Aşağıdaki yapıyı bu eşitlikler sayesinde kurabiliriz.

Bu alanda en çok dikkat edilmesi gereken ve her yazılımcının hayatında bir kez olsun yaptığı hata = ve == ifadeleridir. = : Sağdaki değişkeni veya değeri soldaki değişkene atar. == : Sağ tarafın değeri ile sol tarafın değerinin eşit olup olmadığını karşılaştırır.

Mantıksal Operatörler ( ! , && , || )

Mantıksal operatörler aslında matematikte mantık konusunu oluşturur. Bu 3 operatörü tek tek inceleyelim;

1. Değildir Operatörü ( ! )

Bu operatör gerçekleşen işlemin sonucunu zıt olarak değiştirir. Örneğin;

2. Ve Operatörü ( && )

Bu operatör için aşağıdaki tabloyu inceleyelim;

Tablomuzdaki 1'leri doğru, 0'ları yanlış olarak kabul edebiliriz. Sonuçları ele aldığımızda a ve b değerlerinden herhangi biri sıfır olduğu anda sonucumuzunda sıfıra eşit olduğunu görüyoruz. Ancak her iki değer için de 1 yani doğru geçerli ise sonucumuz 1 oluyor.

Bunu bir örnek üzerinden anlatalım: Elimizde bir kullanıcı adı ve bir de şifre değişkenleri var. Bu iki değerinde bizim için 1 yani doğru sonucunu döndürmesi gerekir ki kullanıcı giriş yapabilsin. O halde bunun kontrolünü şöyle yapabiliriz;

Bunu bir sayı vererekte anlatabiliriz;

Programımızda karşılaştırma yaparken kullandığımız ve operatörü ile karşılaştırmalarımıza seçenek katmış oluruz. Genelde verdiğim üyelik sistemleri bu mantıkta çalışır.

3. Veya Operatörü ( || )

Tablomuzdaki 1'leri doğru, 0'ları yanlış olarak kabul edebiliriz. Sonuçları ele aldığımızda sonucun yanlış yani 0 dönmesi için her iki değişkeninde 0'a eşit olması gerekiyor. Yani iki değişkenin de yanlış olması durumunda sonuç yanlış kabul ediliyor. Fakat belirtilen koşullardan biri sağlandığında doğru sonucunu alıyoruz.

Bunu bir örnek üzerinden anlatalım: Bir kafeye gittiniz ve garsona çay veya kahve olup olmadığını sordunuz. İhtimalleri düşünelim;

Çay var, Kahve Var : Seçim bize kalıyor ve bu durumda kafede oturmaya devam ediyoruz. ( DOĞRU : 1 ) Çay var, Kahve Yok: Çay içiyoruz ve bu durumda kafede oturmaya devam ediyoruz. ( DOĞRU : 1 ) Çay yok, Kahve Var: Kahve içiyoruz ve bu durumda kafede oturmaya devam ediyoruz. ( DOĞRU : 1 ) Çay yok, Kahve Yok: Başka bir kafeye geçiyoruz. ( YANLIŞ : 0 )

Aslında bu 4 satır yukarıdaki tablomuzla aynı sonuca ulaştırıyor bizi. Şimdi bunu kodda görelim;

Koşul Operatörü ( ? )

Eğer (if) yapısını öğrendiğinizde bu yapıyı tekrar kullanmak istemeyebilirsiniz. If yapısının daha basite indirilmiş halidir fakat kişisel olarak kullanım yapısını karmaşık bulmaktayım.

Bunu C++ dilinde bir örnekle açıklamak gerekirse;

Elbette çıktı olarak;

gözükecektir.

Ayırma Operatörü ( , )

Aynı yerde bulunan birden fazla değeri veya değişkeni ayırmak için kullanılır.

Örneğimize baktığımızda yaptığımız işlemleri adım adım inceleyelim;

• x ve y adında iki tane integer değişken oluşturduk.
• y değişkenine atamak için bir yapı oluşturduk. Bu yapımızda ilk olarak x değişkenimize 5 değerini atadık. Ardından y değişkenimize x+1 değerini atadık. Yani 5+1 = 6 değeri y değişkenine atanmış oldu.

Ekrana çıktı olarak

gelecektir.

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• Assignment operators

An assignment operator assigns a value to its left operand based on the value of its right operand.

The basic assignment operator is equal ( = ), which assigns the value of its right operand to its left operand. That is, x = y assigns the value of y to x . The other assignment operators are usually shorthand for standard operations, as shown in the following definitions and examples.

Simple assignment operator which assigns a value to a variable. The assignment operation evaluates to the assigned value. Chaining the assignment operator is possible in order to assign a single value to multiple variables. See the example.

Addition assignment

The addition assignment operator adds the value of the right operand to a variable and assigns the result to the variable. The types of the two operands determine the behavior of the addition assignment operator. Addition or concatenation is possible. See the addition operator for more details.

Subtraction assignment

The subtraction assignment operator subtracts the value of the right operand from a variable and assigns the result to the variable. See the subtraction operator for more details.

Multiplication assignment

The multiplication assignment operator multiplies a variable by the value of the right operand and assigns the result to the variable. See the multiplication operator for more details.

Division assignment

The division assignment operator divides a variable by the value of the right operand and assigns the result to the variable. See the division operator for more details.

Remainder assignment

The remainder assignment operator divides a variable by the value of the right operand and assigns the remainder to the variable. See the remainder operator for more details.

Exponentiation assignment

This is an experimental technology, part of the ECMAScript 2016 (ES7) proposal. Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future version of browsers as the spec changes.

The exponentiation assignment operator evaluates to the result of raising first operand to the power second operand. See the exponentiation operator for more details.

Left shift assignment

The left shift assignment operator moves the specified amount of bits to the left and assigns the result to the variable. See the left shift operator for more details.

Right shift assignment

The right shift assignment operator moves the specified amount of bits to the right and assigns the result to the variable. See the right shift operator for more details.

Unsigned right shift assignment

The unsigned right shift assignment operator moves the specified amount of bits to the right and assigns the result to the variable. See the unsigned right shift operator for more details.

Bitwise AND assignment

The bitwise AND assignment operator uses the binary representation of both operands, does a bitwise AND operation on them and assigns the result to the variable. See the bitwise AND operator for more details.

Bitwise XOR assignment

The bitwise XOR assignment operator uses the binary representation of both operands, does a bitwise XOR operation on them and assigns the result to the variable. See the bitwise XOR operator for more details.

Bitwise OR assignment

The bitwise OR assignment operator uses the binary representation of both operands, does a bitwise OR operation on them and assigns the result to the variable. See the bitwise OR operator for more details.

Left operand with another assignment operator

In unusual situations, the assignment operator (e.g. x += y ) is not identical to the meaning expression (here x = x + y ). When the left operand of an assignment operator itself contains an assignment operator, the left operand is evaluated only once. For example:

Specifications

Browser compatibility.

• Arithmetic operators

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4.6: Assignment Operator

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• Patrick McClanahan
• San Joaquin Delta College

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Assignment Operator

The assignment operator allows us to change the value of a modifiable data object (for beginning programmers this typically means a variable). It is associated with the concept of moving a value into the storage location (again usually a variable). Within C++ programming language the symbol used is the equal symbol. But bite your tongue, when you see the = symbol you need to start thinking: assignment. The assignment operator has two operands. The one to the left of the operator is usually an identifier name for a variable. The one to the right of the operator is a value.

The value 21 is moved to the memory location for the variable named: age. Another way to say it: age is assigned the value 21.

The item to the right of the assignment operator is an expression. The expression will be evaluated and the answer is 14. The value 14 would assigned to the variable named: total_cousins.

The expression to the right of the assignment operator contains some identifier names. The program would fetch the values stored in those variables; add them together and get a value of 44; then assign the 44 to the total_students variable.

As we have seen, assignment operators are used to assigning value to a variable. The left side operand of the assignment operator is a variable and right side operand of the assignment operator is a value. The value on the right side must be of the same data-type of the variable on the left side otherwise the compiler will raise an error. Different types of assignment operators are shown below:

• “=” : This is the simplest assignment operator, which was discussed above. This operator is used to assign the value on the right to the variable on the left. For example: a = 10; b = 20; ch = 'y';

If initially the value 5 is stored in the variable a,  then:  (a += 6) is equal to 11.  (the same as: a = a + 6)

If initially value 8 is stored in the variable a, then (a -= 6) is equal to  2. (the same as a = a - 6)

If initially value 5 is stored in the variable a,, then (a *= 6) is equal to 30. (the same as a = a * 6)

If initially value 6 is stored in the variable a, then (a /= 2) is equal to 3. (the same as a = a / 2)

Below example illustrates the various Assignment Operators:

Definitions

 Adapted from:  "Assignment Operator"  by  Kenneth Leroy Busbee , (Download for free at http://cnx.org/contents/[email protected] ) is licensed under  CC BY 4.0

cppreference.com

Assignment operators.

Assignment operators modify the value of the object.

[ edit ] Definitions

Copy assignment replaces the contents of the object a with a copy of the contents of b ( b is not modified). For class types, this is performed in a special member function, described in copy assignment operator .

For non-class types, copy and move assignment are indistinguishable and are referred to as direct assignment .

Compound assignment replace the contents of the object a with the result of a binary operation between the previous value of a and the value of b .

[ edit ] Assignment operator syntax

The assignment expressions have the form

• ↑ target-expr must have higher precedence than an assignment expression.
• ↑ new-value cannot be a comma expression, because its precedence is lower.

[ edit ] Built-in simple assignment operator

For the built-in simple assignment, the object referred to by target-expr is modified by replacing its value with the result of new-value . target-expr must be a modifiable lvalue.

The result of a built-in simple assignment is an lvalue of the type of target-expr , referring to target-expr . If target-expr is a bit-field , the result is also a bit-field.

[ edit ] Assignment from an expression

If new-value is an expression, it is implicitly converted to the cv-unqualified type of target-expr . When target-expr is a bit-field that cannot represent the value of the expression, the resulting value of the bit-field is implementation-defined.

If target-expr and new-value identify overlapping objects, the behavior is undefined (unless the overlap is exact and the type is the same).

In overload resolution against user-defined operators , for every type T , the following function signatures participate in overload resolution:

For every enumeration or pointer to member type T , optionally volatile-qualified, the following function signature participates in overload resolution:

For every pair A1 and A2 , where A1 is an arithmetic type (optionally volatile-qualified) and A2 is a promoted arithmetic type, the following function signature participates in overload resolution:

[ edit ] Built-in compound assignment operator

The behavior of every built-in compound-assignment expression target-expr   op   =   new-value is exactly the same as the behavior of the expression target-expr   =   target-expr   op   new-value , except that target-expr is evaluated only once.

The requirements on target-expr and new-value of built-in simple assignment operators also apply. Furthermore:

• For + = and - = , the type of target-expr must be an arithmetic type or a pointer to a (possibly cv-qualified) completely-defined object type .
• For all other compound assignment operators, the type of target-expr must be an arithmetic type.

In overload resolution against user-defined operators , for every pair A1 and A2 , where A1 is an arithmetic type (optionally volatile-qualified) and A2 is a promoted arithmetic type, the following function signatures participate in overload resolution:

For every pair I1 and I2 , where I1 is an integral type (optionally volatile-qualified) and I2 is a promoted integral type, the following function signatures participate in overload resolution:

For every optionally cv-qualified object type T , the following function signatures participate in overload resolution:

[ edit ] Example

Possible output:

[ edit ] Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

[ edit ] See also

Operator precedence

Operator overloading

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• Assignment operators

An assignment operator assigns a value to its left operand based on the value of its right operand.

The basic assignment operator is equal ( = ), which assigns the value of its right operand to its left operand. That is, x = y assigns the value of y to x . The other assignment operators are usually shorthand for standard operations, as shown in the following definitions and examples.

Simple assignment operator which assigns a value to a variable. Chaining the assignment operator is possible in order to assign a single value to multiple variables. See the example.

Addition assignment

The addition assignment operator adds the value of the right operand to a variable and assigns the result to the variable. The types of the two operands determine the behavior of the addition assignment operator. Addition or concatenation is possible. See the addition operator for more details.

Subtraction assignment

The subtraction assignment operator subtracts the value of the right operand from a variable and assigns the result to the variable. See the subtraction operator for more details.

Multiplication assignment

The multiplication assignment operator multiplies a variable by the value of the right operand and assigns the result to the variable. See the multiplication operator for more details.

Division assignment

The division assignment operator divides a variable by the value of the right operand and assigns the result to the variable. See the division operator for more details.

Remainder assignment

The remainder assignment operator divides a variable by the value of the right operand and assigns the remainder to the variable. See the remainder operator for more details.

Left shift assignment

The left shift assignment operator moves the specified amount of bits to the left and assigns the result to the variable. See the left shift operator for more details.

Right shift assignment

The right shift assignment operator moves the specified amount of bits to the right and assigns the result to the variable. See the right shift operator for more details.

Unsigned right shift assignment

The unsigned right shift assignment operator moves the specified amount of bits to the right and assigns the result to the variable. See the unsigned right shift operator for more details.

Bitwise AND assignment

The bitwise AND assignment operator uses the binary representation of both operands, does a bitwise AND operation on them and assigns the result to the variable. See the bitwise AND operator for more details.

Bitwise XOR assignment

The bitwise XOR assignment operator uses the binary representation of both operands, does a bitwise XOR operation on them and assigns the result to the variable. See the bitwise XOR operator for more details.

Bitwise OR assignment

The bitwise OR assignment operator uses the binary representation of both operands, does a bitwise OR operation on them and assigns the result to the variable. See the bitwise OR operator for more details.

Left operand with another assignment operator

In unusual situations, the assignment operator (e.g. x += y ) is not identical to the meaning expression (here x = x + y ). When the left operand of an assignment operator itself contains an assignment operator, the left operand is evaluated only once. For example:

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• A named space for holding data/information
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• A combination of variables, operators, and literals that represent a single value
• The smallest syntactically valid construct that conveys a complete command
• Placing a value into the memory identified by a variable/constant
• The assignment operator is a binary operator; the left-side operand is a variable/constant and the right-side operand is a literal or an expression (i.e., something that evaluates to a value)
• initial = 'H'
• initial = 'H';
• ok = false;
• A variable can only contain one value at a time
• int i; i = 5; // i contains the value 5 i = 27; // i now contains the value 27
• Confusing the assignment operator with the notion of "equality"
• Attempting to use expressions like 21 = age (which has an inappropriate left-side operand)
• The assignment operation evaluates to the value of the right-side operand (so, is an expression)
• int i, j; i = j = 5;
• It can cause confusion in more complicated statements, especially those involving arithmetic operators and relational operators
• In the previous example, which assignment is performed first?
• Associativity - determines whether (in the absence of other determinants) an expression is evaluated from left to right or right to left
• The assignment operator has right to left associativity, so i = j = 5 is equivalent to i = (j = 5)
• Ensuring that the type of the right-side operand is the same as the type of the left-side operand
• Java does not allow implicit losses of precision
• Java does allow widenings (though you should refrain from using them)
• double weight; int age; age = 21.0; // Not allowed (will generate a compile-time error) weight = 155; // Allowed but not recommended (use 155. instead)
• ( type ) expression
• Examples: double real; int small; long large; // ... small = (int)large; // ... small = (int)real;
• Loss of precision
• Possible loss of magnitude
• Possible change of sign
• Indicate that a value can only be assigned to a variable once
• final type variable [, variable ]... ;
• final boolean CORRECT;
• final double BUDGET;
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• Same as for other variables
• Must be all uppercase
• Underscores between "words" improve readability
• An error will be generated if an identifier that is declared to be final is the left-side operand of more than one assignment operator
• Include the assignment in the declaration
• The value of the right-side operand is assigned to the left-side operand
• The address of the right-side operand is assigned to the left-side operand

Assignment operator

The assignment operator is used to assign a value to a variable. It is represented by the equals sign (=) and it assigns the value on the right side of the equals sign to the variable on the left side.

Think of the assignment operator as a delivery person who takes a package from one place and delivers it to another place. The equals sign (=) acts like their hands, transferring the value from one side to another.

Related terms

Arithmetic operators : These are operators used for mathematical calculations such as addition (+), subtraction (-), multiplication (*), and division (/).

Comparison operators : These are operators used to compare two values or variables, such as greater than (>), less than (<), equal to (==), not equal to (!=).

Compound assignment operators : These are shorthand versions of assignment operators combined with other arithmetic or bitwise operations, such as +=, -=, *=, /=.

" Assignment operator " appears in:

Study guides ( 1 ).

AP Computer Science A - 1.3 Expressions and Assignment Statements

Additional resources ( 2 )

AP Computer Science A - Unit 1 Overview: Primitive Types

AP Computer Science A - Unit 2 Overview: Using Objects

Practice Questions ( 1 )

What is the assignment operator?

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Assignment operators are used for assigning value to a variable. The left side operand of the assignment operator is a variable and right side operand of the assignment operator is a value. The value on the right side must be of the same data-type of the variable on the left side otherwise the compiler will raise an error.

Different types of assignment operators are shown below:

1. “=”: This is the simplest assignment operator. This operator is used to assign the value on the right to the variable on the left. Example:

2. “+=” : This operator is combination of ‘+’ and ‘=’ operators. This operator first adds the current value of the variable on left to the value on the right and then assigns the result to the variable on the left. Example:

If initially value stored in a is 5. Then (a += 6) = 11.

3. “-=” This operator is combination of ‘-‘ and ‘=’ operators. This operator first subtracts the value on the right from the current value of the variable on left and then assigns the result to the variable on the left. Example:

If initially value stored in a is 8. Then (a -= 6) = 2.

4. “*=” This operator is combination of ‘*’ and ‘=’ operators. This operator first multiplies the current value of the variable on left to the value on the right and then assigns the result to the variable on the left. Example:

If initially value stored in a is 5. Then (a *= 6) = 30.

5. “/=” This operator is combination of ‘/’ and ‘=’ operators. This operator first divides the current value of the variable on left by the value on the right and then assigns the result to the variable on the left. Example:

If initially value stored in a is 6. Then (a /= 2) = 3.

Below example illustrates the various Assignment Operators:

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İngilizce - türkçe, "assignment" için örnek kullanımlar, yakın kelimeler.

• assignation
• assignment nedir?
• assimilation

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Meaning of assignment in English

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• It was a jammy assignment - more of a holiday really.
• He took this award-winning photograph while on assignment in the Middle East .
• His two-year assignment to the Mexico office starts in September .
• She first visited Norway on assignment for the winter Olympics ten years ago.
• He fell in love with the area after being there on assignment for National Geographic in the 1950s.
• act as something
• all work and no play (makes Jack a dull boy) idiom
• be at work idiom
• be in work idiom
• housekeeping
• in the line of duty idiom
• undertaking

You can also find related words, phrases, and synonyms in the topics:

assignment | American Dictionary

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