Thread: fgets and readRestOfLine errors

Hello guys, I am working on a menu, it keeps popping error and I have no idea why. Here's the code.
-----------------------------------------------------------------------

Code:

int printMenu(void)
{
    int option;
    char input[3];


    while((option != 3)||(option < 4)||(option > 0))
    {
        printf("Welcome\n");
        printf("---------------------\n");
        printf("1.Play \n2.Display Scores\n3.Quit\n");
        printf("Please enter your choice: ");


        fgets(input, 3, stdin);


        if (input[strlen(input) - 1] != '\n')
        {
            printf("Input was too long.\n");
            readRestOfLine();
        }
        else
        {
            input[strlen(input) - 1] = '\0';
        }


        switch (option)
        {
            case 1:
                printf("Loading ...\n");
                break;
            case 2:
                printf("Loading ...\n");
                break;
            case 3:
                printf("Quitting...\n");
                exit(0);
                break;
            default:
                printf("Invalid ! Please choose again.\n");
                break;
        }
    }
}

void readRestOfLine()
{
    int c;


    /*read until the end of the line or end-of-file*/
    while ((c = fgets(stdin)) != '\n' && c != EOF);
    
    /*clear the error and end-of-file flags*/
    clearerr(stdin);
}

Welcome to the forum.

You should post a complete program (with a main function) that we can compile and test. Also provide the errors you are getting.

One thing I see - compare the "fgets()" call on line 15 to the one on line 54. Perhaps you means to use "getchar()" instead?

Code:

if (input[strlen(input) - 1] != '\n')

If you get a zero length string, this will lead to a buffer underrun bug. See here for a better alternative on how to safely replace the newline with a null character, if present: FAQ > Get a line of text from the user/keyboard (C) - Cprogramming.com