实验八 调适

#include <stdio.h>
#define MAX_N 100  //最大总人数
void main()                                    
{
    int n;                                        //总人数
    int i;                                        //循环变量
    float Mark[MAX_N];                            //各人成绩
    float MaxMark,MinMark,AvgMark;                //最高分 最低分 平均分   
    float sum;                                    //分数总和
    int Num90=0,Num80=0,Num70=0,Num60=0,Num0=0; //分数段
    printf("请输入总人数n=");
    scanf("%d",&n);
    for(i = 0; i < n; i++)
    {
        printf("Mark[%d]=", i);
        scanf("%f", &Mark[i]);
    }
    MinMark=100;
    MaxMark=0;
 sum=0;
    for(i = 0; i < n; i++)
    {
        sum = sum + Mark[i];
        if(Mark[i] > MaxMark)
            MaxMark = Mark[i];
        if(Mark[i] < MinMark)
            MinMark = Mark[i];
        if(Mark[i] >= 90)
            Num90++;
        else if(Mark[i] >= 80)
            Num80++;
  else if(Mark[i] >= 70)
            Num70++;
        else if(Mark[i] >= 60)
            Num60++;
        else
            Num0++;
    }
    AvgMark = sum / n;
    //输出
    printf("最高分为%f ", MaxMark);
    printf("最低分为%f ", MinMark);
    printf("平均分为%f ", AvgMark);
    printf("90-100的人数为%d ", Num90);
    printf("80-89的人数为%d ", Num80);
    printf("70-79的人数为%d ", Num70);
    printf("60-69的人数为%d ", Num60);
    printf("60分以下人数为%d ", Num0);
}