C :

#include<stdio.h>
int main()
{
	int a,b;
	scanf("%d%d",&a,&b);
	printf("%d\n",a+b);
} 

C++ :

#include <iostream>
using namespace std;
int  main()
{
    int a,b;
    cin >> a >> b;
    cout << a+b << endl;
    return 0;
}

Pascal :

var a,b:longint;
begin
  readln(a,b);
  writeln(a+b);
end.