#include <stdio.h>main(){double grade[200];double sum,avg,temp;int count,i,n;i=0;count=0;sum=0;printf("请依次输入每个同学的成绩,输入-1结束\n");scanf("%lf",&temp);while(temp!=-1){grade[i++]=temp;count++;sum=sum+temp;scanf("%lf",&temp);}avg=sum/count;n=0;for(i=0;i<count;i++){if(grade[i]>=avg)n++;}printf("全班平均分%.2lf,成绩大于等于平均分的人有%d人\n",avg,n);}
运行结果: