C :

#include <stdio.h>
main()
{
  int n,a,sum;
  
  while(scanf("%d",&n)&&n)
   {
       sum=0;
         while(n--)
       { 
         scanf("%d",&a);
         sum+=a;
       }
    printf("%d\n",sum);
   }
return 0;
}

C++ :

#include <iostream>
#include <cstdio>

int main() {
        int a, b, t;
        while (scanf("%d", &t) && t) {
                a = 0;
                while (t--) {
            scanf("%d", &b);
            a += b;
                }
                printf("%d\n", a);
    }
        return 0;
}

Pascal :

program p1003;
var i,j,s,n:longint;
begin
   while not eof do
    begin
      read(n);
      if n<>0 then
        begin
         s:=0;
         for i:=1 to n do
          begin
            read(j);
            s:=s+j;
          end;
         writeln(s);
       end;
   end;
end.

Java :

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		final int MAX=1024;
		int j = 0;
		@SuppressWarnings("resource")
		Scanner in = new Scanner(System.in);
		int flag;
		int[] a =new int[MAX];
		int[] count = new int[MAX];
		flag = in.nextInt();
		while(flag != 0){
			for(int i =0;i<flag;i++){
				a[i] = in.nextInt();
				count[j]+=a[i];
			}
			j++;
			flag = in.nextInt();
		}
		for(int k = 0;k < j;k++){
			System.out.println(count[k]);
		}
	}
}

Python :

import sys
for line in sys.stdin:
    a = line.split()
    b = map(lambda x:int(x),a[1:])
    if len(b) != 0:
       print reduce(lambda x,y:x+y,b)