6.12

#include <stdio.h>#include <stdlib.h>int main(){    int i,n,sum=0,m;    printf("请输入n个正数的求和运算\n");    scanf("%d",&n);    printf("请分别输入这几个数\n");    for(i=1;i<=n;i++)    {        scanf("%d",&m);        sum+=m;        if(m<=0)        break;    }printf("sum=%d\n",sum);    return 0;}