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//program to demonstrate (+=) operator, a+=2 is same as a=a+2 #include<stdio.h> #include<conio.h> void main() { int a; clrscr(); printf("enter a number"); scanf("%d",&a); printf("number you entered is %d",a); a+=2; // this is same as i=i+2 printf("number after adding two is %d",a); getch(); }