1001. A+B Format (20)

#include "stdafx.h"
#include <iostream>
#include <algorithm>
#include <queue>
#include <stdlib.h>
#include <string.h>using namespace std;int main()
{int a, b;scanf("%d%d", &a, &b);int n = a + b;if(n < 0){printf("-");n = -n;}char s[20];sprintf(s, "%d", n);int len = strlen(s), i, index;for(i = 0; i < len; i++){printf("%c", s[i]);index = len - i;if(index > 3 && index % 3 == 1){printf(",");}}printf("\n");system("pause");return 0;
}