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