What does /= mean in C language?

The /= operator in C language is a compound assignment operator, which is used to divide the value of a variable by an expression and then reassign it to the variable. Its syntax is: variable /= expression. It simplifies the code and improves efficiency, but care must be taken to ensure that the expression is non-zero, and the operation result may suffer a loss of precision.

/= operator in C language

/= operator in C language is a compound assignment operator , used to divide the value of a variable by an expression and then reassign it to the variable. The syntax is:

variable /= expression;

For example:

int x = 10;
x /= 5; // x 现在为 2

Operation process:

1. Find the value of the expression.
2. Divide the current value of the variable by the expression value.
3. Reassign the result to the variable.

Advantages of the /= operator:

• Simplicity: It can shorten the number of lines of code.
• Efficiency: Redundant assignment operations are avoided.

Example:

// 计算平均值
float average = 0;
for (int i = 0; i < count; i++) {
    average /= (float)numbers[i];
}

Note:

• Make sure the expression is non-zero, otherwise it will A runtime error occurs.
• Operation results may suffer from precision loss, especially when dividing by floating point types.

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