C语言编程C语言编程

Question

某班的数学考试成绩如下:90.78.98.67.53.97.78.100.76.88，编程计算并输出该班的总人数、最高分、最低分和平均分

Answer 1

根据这个字符串，通过.分割，得到相应的数字和个数

运行结果：

代码：

#include <stdio.h>
int main()
{
    char str[] = "90.78.98.67.53.97.78.100.76.88";
    int a[100], i=0, n = 0;
    int t = 0;
    int max, min;
    float ave = 0;
    while (str[i] != '\0')
    {
        if (str[i] >= '0' && str[i] <= '9')
            t = t * 10 + (str[i] - '0');
        else
        {
            a[n] = t;
            n++;
            t = 0;
        }
        i++;
    }
    if (t > 0)
        a[n++] = t;
    printf("总人数：%d\n",n);
    max = min = a[0];
    for (i = 0; i < n; i++)
    {
        ave += a[i];
        if (a[i] > max) max = a[i];
        if (a[i] < min) min = a[i];
    }
    printf("最高分：%d\n", max);
    printf("最低分：%d\n", min);
    printf("平均分：%.2f\n", ave / n); //保留2位小数
    return 0;
}