Clang-Tidy : 'scanf' used to convert a string to an integer value, 但函数不会报转换错误；考虑改用 'strtol' (C)

Question

int SchedulingMethodSubMenu(struct linkedList process[], int quantumTime, FILE *fp,FILE *fr,char *ovalue,char line[LINE_MAX])
{
    printf("1)Go Back to Home \n");
    printf("2)Exit \n");
    printf("Option >");

    int choice;
    scanf("%d", &choice);
    while (choice != 1 && choice != 2)
    {
        scanf("%d", &choice);
    }
    if (choice == 1)
    {
        system("clear");
        SchedulingMethodMenu(process, quantumTime, fp, fr, ovalue, line);
    } else if (choice == 2)
    {
        system("clear");
        exit(0);
    }
    return 0;
}

你好， friend 们，

我在我的 C 项目中遇到这个错误

Clang-Tidy: 'scanf' used to convert a string to an integer value, but function will not report conversion errors; consider using 'strtol' instead (C++)

如果你没有得到错误的原因，你能帮我吗？

Answer 1

这不是错误消息，而是来自 CLion 的警告，正如@WilliamPursell 所建议的那样，请改用 getchar。

int SchedulingMethodSubMenu(struct linkedList process[], int quantumTime, FILE *fp,FILE *fr,char *ovalue,char line[LINE_MAX])
{
    printf("1)Go Back to Home \n");
    printf("2)Exit \n");
    printf("Option >");

    int choice;
    choice = getchar();
    while (choice != 1 && choice != 2)
    {
        choice = getchar();
    }
    if (choice == 1)
    {
        system("clear");
        SchedulingMethodMenu(process, quantumTime, fp, fr, ovalue, line);
    } else if (choice == 2)
    {
        system("clear");
        exit(0);
    }
    return 0;
}

其他 Stack Overflow 问题

• CLion recommends to use 'strtol' instead of 'scanf'
• What can I use for input conversion instead of scanf?
• Using fgets and strtol to get a single integer

相关

• scanf in CLion