PAT 문제 풀이
651 단어 pat
#include <cmath>
#include <cstdio>
#include <iostream>
using namespace std;
char str[100];
int main(){
// freopen("I-in.txt", "r", stdin);
int a, b;
scanf("%d%d", &a, &b);
int c = a + b;
int flag = 0;
if(c < 0) flag = 1;
int pos = 1;
int tmp = abs(c);
while(tmp){
if(pos%4 == 0)str[pos++] = ',';
str[pos++] = '0' + tmp % 10;
tmp /= 10;
}
if(flag) printf("-");
for(int i = pos - 1; i >= 1; i--)
printf("%c", str[i]);
if(!c) printf("0");
printf("
");
return 0;
}