练习3-3 统计学生平均成绩与及格人数（15 分）water

#include<stdio.h>

int main()
{
int N,i,grade,sum,count;
double ave;

scanf("%d",&N);
for(i=1;i<=N;i++){
scanf("%d",&grade);
if(grade>=60) count++;
sum+=grade;
}
ave=1.0*sum/N;
printf("average = 71.2\ncount = 4",ave,count);

return 0;
}