pat 1001

简单水题

#include<stdio.h>#define NUM 15int cnt[NUM];int main(){int a,b,sum;scanf("%d %d",&a,&b);sum=a+b;if(sum==0){printf("0");return 0;}if(sum<0){printf("-");sum=0-sum;}int index=1;while(sum){cnt[index++]=sum%10;sum=sum/10;}for(int i=index-1;i>=1;i--){if(i%3==0&&i!=index-1)printf(",");printf("%d",cnt[i]);}return 0;}