What does += mean in C language?

The = operator in C language is used to accumulate variable values ​​to a given value. It adds the current value of the variable to the given value and reassigns the result to the variable. The syntax is: variable = value; where variable is the variable to be accumulated and value is the value to be accumulated. It should be noted that variable and value must be of the same type, and the = operator cannot be used for Boolean variables.

= operator in c language

= operator is an assignment operator, its function is to The value of a variable is accumulated to a given value.

Syntax:

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

Among them:

• ##variable is the variable to be accumulated.
• value is the value to be accumulated.

Effect:

= operator will accumulate the current value of

variable and value, and The result is reassigned to variable.

Example:

<code class="c">int x = 5;
x += 3; // x 此时变为 8</code>

In this example, the initial value of

x is 5. x = 3 is equivalent to x = x 3, add 3 to x and reassign its value to x, we get 8 .

Note:

• variable and value must be the same type.
= operator cannot be used with Boolean variables.

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