#include<stdio.h>
int sum(
int i){
int k=
0;
while(i){k+=i;i--;}
return k;}
int main(){
int a;
while(
1 == scanf(
"%d",&a))printf(
"%d\n\n",sum(a));
return 0;}
转载于:https://www.cnblogs.com/CheeseZH/archive/2012/03/15/2397789.html
相关资源：数据结构—成绩单生成器
