Question

Explain the difference between the prefix and postfix forms of the increment operator.

Answer 1

The prefix form of increment operator is ++a, for the variable a.

• it first increments the value of the variable and substitutes the incremented value of the variable to the expression.

The postfix form of increment operator is a++, for the variable a.

• it substitutes the existing value of the variable to the expression and then increments the value.

Step-by-step explanation:

Let a = 6.

++a + 5 = 12.

but

a++ + 5 =11.