C ++ study notes -- continuous updates and study notes during the postgraduate course --

C ++ study notes -- continuous updates and study notes during the postgraduate course --

1. Differences between post-increment and pre-increment

Source: http://www.c4learn.com/c-programming/c-increment-operator/

#include<stdio.h>void main(){int a,b,x=10,y=10;a = x++;b = ++y;printf("Value of a : %d",a);printf("Value of b : %d",b);}

Different Types of Increment Operation

In C Programming we have two types of increment operator I. e Pre-Increment and Post-Increment Operator.

A. Pre Increment Operator

Pre-increment operator is used to increment the value of variable before using in the expression. In the Pre-Increment value is first incremented and then used inside the expression.

b = ++y;

In this example suppose the value of variable 'y' is 5 then value of variable 'B' will be 6 because the value of 'y' gets modified before using it in a expression.

B. Post Increment Operator

Post-increment operator is used to increment the value of variable as soon as after executing expression completely in which post increment is used. in the Post-Increment value is first used in a expression and then incremented.

b = x++;

In this example suppose the value of variable 'X' is 5 then value of variable 'B' will be 5 because old value of 'X' is used.