作业三-2.输入一个正整数 n,再输入 n 个学生的成绩,计算平均成绩,并统计所有及格学生的人数。
#include<stdio.h> int main(void) { int count,num,n; double grade,total; num=0; total=0; count=0; printf("Enter n:"); scanf("%d",&n); printf("Enter grades:"); scanf("%lf",&grade); while(grade>=0){ total=total+grade; /*计算总成绩*/ num++; /*计算总人数*/ if(grade>60) count++; scanf("%lf",&grade); } if(num!=0){ printf("Grade average is%.2f\n",total/num); printf("Number of success is %d\n",count); } else printf("Grade average is0\n"); return 0; }