What does x*=x+1 mean in C language?

In C language, the expression x *= x 1 updates x to the product of itself and itself plus 1. Calculate x 1 first. Multiply x by the value calculated in the first step. Update x to the calculated result.

The meaning of x *= x 1 in C language

The *= operator in C language is a Compound assignment operator that multiplies a variable by itself and the value of another expression.

In the x *= x 1 statement, the x variable will be updated to the product of its current value and itself plus 1.

Detailed explanation:

1. First, calculate the value of x 1. For example, if x has a value of 5, then x 1 has a value of 6.
2. Next, multiply x by the value calculated in the first step. In this example, x is multiplied by 6, which gives us 30.
3. Finally, update x to the calculated result. Therefore, the new value of x is 30.

Example:

The following is a code example using the x *= x 1 statement:

<code class="c">int x = 5;

x *= x + 1; // x 现在等于 30

printf("x 的新值为 %d\n", x); // 输出：x 的新值为 30</code>

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