#include <stdio.h>
#include <stdlib.h>

int main()
{
    int myInt = 6;
    int otherInt = 12;
    int userInt;
    int Y = Y;
    int N = N,n;

go1: printf ( "Please put in the number '6' or the number '12': " );

    scanf ( "%d",&userInt );getchar();

    if ( userInt == myInt )
        {
            printf ( "You entered: 6!\n" );
            go2: printf ( "Would you like to start again? Y/N\n\n" );
            scanf ( "%s",&userInt );getchar(); /*It's important not to use '%d' here because '%d' means decimal number (but here we need a letter!)*/
            if ( userInt == 'Y' )
                {
                    goto go1;
                }
            else if ( userInt == 'y' )
                {
                    goto go1;
                }
            else if( userInt == 'N')
                {
                    exit(0);  //If either 'Y' or 'N' is enter, the program exits with 0
                }
            else if( userInt == 'n')
                {
                    exit(0);  //If either 'Y' or 'N' is enter, the program exits with 0
                }
            else
                {
                printf ("Invalid answer.\n");
                goto go2; //Go back to question above
                }
        }
    if ( userInt == otherInt )
        {
            printf ( "You entered: 12!\n" );
            printf ( "Would you like to start again? Y/N\n\n" );
            scanf ( "%s",&userInt );  /*It's important not to use '%d' here because '%d' means decimal number (but here we need a letter!)*/
            if ( userInt == 'Y' )
                {
                    goto go1;
                }
            else if ( userInt == 'y' )
                {
                    goto go1;
                }
            else if( userInt == 'N')
                {
                    exit(0);  //If either 'Y' or 'N' is enter, the program exits with 0
                }
            else if( userInt == 'n')
                {
                    exit(0);  //If either 'Y' or 'N' is enter, the program exits with 0
                }
            else
                {
                printf ("Invalid answer.\n");
                goto go2; //Go back to question above
                }
        }
    else
        {
            printf(  "Can't you read? Try again!\n" );
            getchar();
            goto go1;
        }
    return 1;
}