write a program in c++ to addition of two number

Here we learn to write a program in c++ to addition of two number.Suppose we have a two number like a,b and sum of  a,b will be result on outputSo we coding like that

#include <iostream.h>

#include <conio.h>

void main()

{

clrscr();

int a,b,sum;

cout<<"\n enter the value of a";

cin>>a;

cout<<"\n enter the value of b";

cin>>b;

sum=a+b;

cout<<sum;

getch();

}

The Output will be like this

Enter the value of a: 40
Enter the value of b: 24
sum=64