This documentation is archived and is not being maintained.

Subtraction Assignment Operator (-=)

Visual Studio 2010

Subtracts the value of an expression from the value of a variable and assigns the result to the variable.

Copy 
result -= expression

result

Any numeric variable.

expression

Any numeric expression.

Using this operator is almost the same as specifying result = result - expression, except that result is only evaluated once.

Show: