skippart.c

来自「经典书籍：C Primer Plus(第五版)中文版和源代码 本书全面讲述了C」· C语言 代码 · 共 39 行

/* skippart.c  -- uses continue to skip part of loop */
#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;
        }
        printf("Accepting %0.1f:\n", score);
        min = (score < min)? score: min;
        max = (score > max)? score: max;
        total += score;
        n++;
        printf("Enter next score (q to quit): ");
    }
    if (n > 0)
    {
        printf("Average of %d scores is %0.1f.\n", n, total / n);
        printf("Low = %0.1f, high = %0.1f\n", min, max);
    }
    else
        printf("No valid scores were entered.\n");
    return 0;
}