7.9 skippart.c 程序

7.9 skippart.c 程序

#include <stdio.h>
int main(void)
{
    const float MIN = 0.0f;
    const float MAX = 100.0f;
    float score;
    float total = 0.0f;
    int n = 0;
    float min = MAX;
    float max = MIN;
    printf("Enter the first score (q to quit): ");
    while (scanf("%f", &score) == 1)
    {
        if (score < MIN || score > MAX)
        {
            printf("%0.1f is an invalid value. Try again: ", score);
            continue;        // 跳转至while循环的测试条件
        }
    printf("Accepting %0.1f:
", score);
    min = (score < min) ? score : min;
    max = (score > max) ? score : max;
    tota += score;
    n++;
    printf("Enter next score (q to quit): ");
    }
    if (n > 0)
    {
        printf("Average of %d scores is %0.1f.
",  n, total / n);
        printf("Low = %0.1f, high = %0.1f
", min, max);
    }
    else 
        printf("No valid scores were entered.
");
    return 0;
}