What does x-=10 mean in C language?

The x-=10 operator in C language subtracts 10 from the current value of variable x and reassigns it to x. The specific meaning and usage are as follows: Meaning: Equivalent to x = x - 10. Usage: Used to perform repeated assignment operations, such as decrementing a variable, concisely and readably.

The meaning of x-=10 in C language

In C language,x-= 10 is a compound assignment operator, which is equivalent to x = x - 10.

Meaning:

This operator subtracts 10 from the current value of variable x and reassigns the result to x.

Example:

Suppose the current value of variable x is 20.

• After executing x-=10, the value of x becomes 20 - 10 = 10.

Usage:

Compound assignment operations are often used for cleaner, more readable code, especially in repeated assignment operations.

For example, the following code snippet uses the x-=10 operator to decrement the variable x:

for (int i = 0; i < 10; i++) {
  x -= 10;
}

This code is equivalent to:

for (int i = 0; i < 10; i++) {
  x = x - 10;
}

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