for回圈重復直到值小于三

我不知道為什么我的 for 回圈不起作用。我已經嘗試了這么久。它只是為do/運行while并回傳。do/while回圈中的所有內容。我在main函式外部宣告了一個宏，并將其用作回圈條件。我無法添加更多細節，我只有代碼。

#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>

#define MIN_YEAR 2012
#define MAX_YEAR 2022

#define LOG_DAYS 3

int main(void)
{
    const int JAN = 1;
    const int DEC = 12;
    int year = 0;
    int month = 0;
    char day1 = 01;
    char day2 = 02;
    char day3 = 03;
    float ratingMorning = 0;
    float ratingEvening = 0;

    printf("General Well-being Log\n"
        "======================\n");

    do
    {
        printf("Set the year and month for the well-being log (YYYY MM): ");
        scanf(" %d %d", &year, &month);

        if ((MIN_YEAR > year || year > MAX_YEAR))
        {
            printf("   ERROR: The year must be between 2012 and 2022 inclusive\n");
        }

        if ((JAN > month || month > DEC))
        {
            printf("   ERROR: Jan.(1) - Dec.(12)\n");
        }

        if ((JAN <= month && month <= DEC) && (MIN_YEAR <= year && year <= MAX_YEAR))
        {
            printf("\n*** Log date set! ***\n\n");
            break;
        }

    } while ((MIN_YEAR <= year || year <= MAX_YEAR) && (JAN <= month || month <= DEC));

    for (int i = 0; i < LOG_DAYS; i  )
    {
        printf(" %d", year);
        printf("-");
        printf(" %d", month);
        printf("-");
        printf(" %d",day1);
        printf("   Morning rating (0.0-5.0): ");
        scanf(" %d", &ratingMorning);

        if (ratingMorning < 0 || ratingMorning > 5)
        {
            printf("      ERROR: Rating must be between 0.0 and 5.0 inclusive!");
        }
        
        printf("   Evening rating (0.0-5.0): ");
        scanf(" %d", &ratingEvening);

        if (ratingEvening < 0 || ratingEvening > 5)
        {
            printf("      ERROR: Rating must be between 0.0 and 5.0 inclusive!");
        }
    }
    return 0;
}

uj5u.com熱心網友回復：

/回圈while部分的測驗不正確。當輸入正確時使用回圈和中斷要簡單得多，避免了冗余和有時不一致的測驗。dowhilefor(;;)

的scanf()轉換說明符float是%f，不是%d。

這是修改后的版本：

#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>

#define MIN_YEAR 2012
#define MAX_YEAR 2022

#define LOG_DAYS 3

int main(void) {
    const int JAN = 1;
    const int DEC = 12;
    int year = 0;
    int month = 0;
    char day1 = 1;
    char day2 = 2;
    char day3 = 3;
    float ratingMorning = 0;
    float ratingEvening = 0;

    printf("General Well-being Log\n"
        "======================\n");

    for (;;) {
        printf("Set the year and month for the well-being log (YYYY MM): ");
        if (scanf(" %d %d", &year, &month) != 2) {
            printf("invalid input\n");
            return 1;
        }
        if (year < MIN_YEAR || year > MAX_YEAR) {
            printf("   ERROR: The year must be between 2012 and 2022 inclusive\n");
        } else
        if (month < JAN || month > DEC)) {
            printf("   ERROR: Jan.(1) - Dec.(12)\n");
        } else {
            printf("\n*** Log date set! ***\n\n");
            break;
        }
    }

    for (int i = 0; i < LOG_DAYS; i  ) {
        printf(" %d- %d- %d", year, month, day1);
        printf("   Morning rating (0.0-5.0): ");
        if (scanf("%f", &ratingMorning) != 1) {
            printf("invalid input\n");
            return 1;
        }
        if (ratingMorning < 0 || ratingMorning > 5) {
            printf("      ERROR: Rating must be between 0.0 and 5.0 inclusive!");
            continue;
        }
        
        printf("   Evening rating (0.0-5.0): ");
        if (scanf("%f", &ratingEvening) != 1) {
            printf("invalid input\n");
            return 1;
        }
        if (ratingEvening < 0 || ratingEvening > 5) {
            printf("      ERROR: Rating must be between 0.0 and 5.0 inclusive!");
            continue;
        }
        // ... handle the ratings and report success
    }
    return 0;
}

uj5u.com熱心網友回復：

如果問題是：

如果 (ratingMorning < 0 || ratingMorning > 5) 不起作用

即ERROR: Rating must be between 0.0 and 5.0 inclusive!"永遠不會列印錯誤行，然后當您在行中更改為時%d，將列印錯誤，因為現在包含有效值，而當它們作為整數輸入時，這些值無效。%fscanf(" %d", &ratingMorning);ratingMorningratingEvening

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