What does ++= mean in c language

The = operator in C language adds 1 to the value on the right and then assigns it to the variable on the left: 1. Syntax: variable = expression; 2. Meaning: variable increases the value of expression.

The meaning of = in C language

In C language, = is a The compound assignment operator adds 1 to the value on the right and assigns it to the variable on the left.

Syntax:

<code>variable ++= expression;</code>

Meaning:

The value of the variable is increased by the value of expression.

Equivalent code:

The following code is equivalent to variable = expression;:

<code>variable = variable + expression;</code>

Example:

<code class="c">int x = 5;
x ++= 2; // 将 x 增加 2
// 现在 x 等于 7</code>

Note:

• variable must be a modifiable L-value (lvalue).
• expression must be an expression of type integer.
• The = operator has lower precedence than the assignment operator (=), so you need to consider the use of parentheses when using it.

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