What does *= mean in c++

The

= operator is used to multiply a variable by another value and store it in that variable, equivalent to variable = variable expression. Syntax: variable = expression. Advantages: simplicity, improved readability and maintainability. Alternative: x = x 5.

The meaning of *= in C

*= operator is a compound assignment operator in C. Used to multiply a variable by another value and store the result in the variable.

Grammar:

<code class="cpp">variable *= expression;</code>

Among them, variable is the variable to be modified, expression is an arithmetic expression, which can be Evaluate to get a value.

How it works:

*= operator is equivalent to the following code:

<code class="cpp">variable = variable * expression;</code>

For example, the following code changes the variable x Multiply the value by 5 and store its result back to x:

<code class="cpp">int x = 10;
x *= 5; // x 现在等于 50</code>

преимущества:

*= operator is more efficient than the traditional assignment operator Concise, especially when you need to multiply a variable by a constant or expression. It improves code readability and maintainability.

Alternative:

If you don't want to use the *= operator, you can use the traditional assignment operator:

<code class="cpp">int x = 10;
x = x * 5; // x 现在等于 50</code>

However, the *= operator Notation is a more concise and preferred way of performing multiplicative assignment operations.

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