C :

#include <stdio.h>
int main(){
    //freopen("test.in", "r", stdin);
    //freopen("test.out", "w", stdout);
    int N;
    scanf("%d", &N);
    for(int i = 1; i <= N; i ++){
        int a, b;
        scanf("%d %d", &a, &b);
        printf("Case #%d: %d\n", i, a+b);
    }
    return 0;
}

C++ :

#include <stdio.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
int main()
{
    int N,a,b,sum,i=1;
    scanf("%d",&N);
    while(N--)
    {
        scanf("%d%d",&a,&b);
        sum=a+b;
        printf("Case #%d: %d\n",i,sum);
        i++;
    }
}

Pascal :

var a,b,i,n:integer;s:array[1..100]of integer;
begin
  readln(n);
  for i:=1 to n do begin readln(a,b);s[i]:=a+b;end;
  for i:=1 to n do writeln('Case #',i,': ',s[i]);
end.

Java :

import java.util.Scanner;

public class Main{
   private static Scanner s = new Scanner(System.in) ;
   public static void main(String[] args) {
	  int N = s.nextInt() ;
	  if(N>=0&&N <= 5){
	  for (int i = 0; i < N; i++) {
		int a = s.nextInt() ;
		int b = s.nextInt() ;
		if(0<=a&&a<=1000&&b>=0&&b<=1000){
			System.out.println("Case #"+(i+1)+": "+(a+b)+"") ;
		}
	  }
	  }
   }
}

Python :

a = input()
for i in range(0,a):
 a,b=map(int,raw_input().split())
 print "Case #%d: %d"%(i+1,a+b)