-=

[Compound Operators]

Description

This is a convenient shorthand to perform subtraction of a constant or a variable from a variable.

Syntax

x -= y;   // equivalent to the expression x = x - y;

Parameters

x: variable. Allowed data types: int, float, double, byte, short, long
y: variable or constant. Allowed data types: int, float, double, byte, short, long

Example Code

x = 20;
x -= 2;      // x now contains 18

See also