What does -= mean in C?

What does the -= operator do?

The -= operator first subtracts the value of the expression (on the right-hand side of the operator) from the value of the variable or property (on the left-hand side of the operator). The operator then assigns the result of that operation to the variable or property.

Can you use += in C?

In this tutorial, you will learn about different operators in C programming with the help of examples. ... C Assignment Operators.OperatorExampleSame as+=a += ba = a+b-=a -= ba = a-b*=a *= ba = a*b/=a /= ba = a/b

Why do we use += in C?

The += operator performs enhanced assignments. The value of the expression to the right of the operator is added to the value of the variable to the left of the operator, and the result replaces the value of the variable.

What does =! Mean in C?

Long ago, when dinosaurs roamed the earth and C ran on 5th edition UNIX on PDP-11s, =! was the 'not equals' operator. This usage was deprecated by the creation of Standard C, so now it means 'assign the logical inverse', as in a = !