杭电OJ(HDU)-ACM Steps-Chapter One-《A+B for Input-Output Practice》 1至8 全解

http://acm.hdu.edu.cn/game/entry/problem/list.php?chapterid=1&sectionid=2

 

2.

#include <stdlib.h>int main(){    int a,b,d=0;int n;scanf("%d",&n);int i = 0;for (;i<n;++i){scanf("%d%d",&a,&b);d=a+b;printf("%d\n",d);}    return 0;}</p>

 

3.

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

4.

int main(){    int a=0,d=0,n=0;scanf("%d",&n);while(n){for (int i=0;i<n;++i){scanf("%d",&a);d+=a;}printf("%d\n",d);d=0;scanf("%d",&n);}    return 0;}

5.

int main(){int a,b,d=0;int n,m;while(scanf("%d",&n)!=EOF) {for (int i = 0;i<n;++i){scanf("%d",&m);if (m){for (int i=0;i<m;++i){scanf("%d",&a);d+=a;}printf("%d\n",d);d = 0;}}}return 0;}

6.

int main(){    int a,b,d=0,sum=0;int n,m,i;while(scanf("%d",&n) != EOF){while(n--){scanf("%d",&m);sum=0;for(i=1;i<=m;i++){scanf("%d",&a);sum=sum+a;}printf("%d\n",sum);}}    return 0;}

7.

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

8.

int main(){   int a,sum,n,m;scanf("%d",&n);for(int i=0; i<n; i++) {scanf("%d",&m);sum = 0;for(int j=0; j<m; j++) {scanf("%d",&a);sum += a;}printf("%d\n",sum);if(i<n-1) printf("\n");}return 0;}