Write a program to add two numbers:

1. value given at run time:

#include<iostream.h>

#include<conio.h>

void main()

{

int a,b;

a=10;

b=12;

Cout<<"Addition is="<<a+b;

getch();

}

Out put: Addition is=22

2.value given at compile time

#include<iostream.h>

#include<conio.h>

void main()

{

int a,b;

cout<<"enter value of a=";

cin>>a;

cout<<"enter value of b=";

cin>>b;

cout<<"Addition is="<<a+b;

getch();

}

Out put: enter value of a=12
               enter value of b=10

press enter

                  Addition is=22