C includes a class of operators that act upon a single operand to produce a new value. Such operators k/a unary operators. Unary operators usually precede their single operands, though some unary operators are written after their operands.* There are two other type of unary operator also available in C: 1. Increment Operator (+ +) 2. Decrement Operator (- - ) The increment operator causes its operand to be increased by 1 where as the decrement operator causes its operand to be decreased by 1. The operand used with each of these operators must be a single variable.
Learn something about IT