Thread: I've a problem. Obviously, else I wouldn't be here.

I have this function, which is meant to get a user's input, validate, and translate it to an integer:

Code:

int menu(){
        int rv = 0;
        char in;
        do{

                //Display menu
                printf("----------------------------\n");
                printf("|What would you like to do?|\n");
                printf("|1. View [A]ll Students    |\n");
                printf("|2. View [R]ecord Number   |\n");
                printf("|3. View [S]tudent Number  |\n");
                printf("|4. [Q]uit                 |\n");
                printf("----------------------------\n\n");
                printf("Enter your selection: ");

//              while ((in = getchar()) != EOF);

                scanf("%c", &in);

                //Validate
                if (in == '1' || in == 'A' || in == 'a') rv = 1;
                else if (in == '2' || in == 'R' || in == 'r') rv = 2;
                else if (in == '3' || in == 'S' || in == 's') rv = 3;
                else if (in == '4' || in == 'Q' || in == 'q') rv = 4;
                else printf ("Invalid entry, please try again\n");

        } while (!rv);

        return (rv);
}

The first time it's called, it works as expected:

Code:

----------------------------
|What would you like to do?|
|1. View [A]ll Students    |
|2. View [R]ecord Number   |
|3. View [S]tudent Number  |
|4. [Q]uit                 |
----------------------------

But any additional times I call it, it acts as if I already typed something before going on to what I want:

Code:

Enter your selection: a
----------------------------
|What would you like to do?|
|1. View [A]ll Students    |
|2. View [R]ecord Number   |
|3. View [S]tudent Number  |
|4. [Q]uit                 |
----------------------------

Enter your selection: Invalid entry, please try again

----------------------------
|What would you like to do?|
|1. View [A]ll Students    |
|2. View [R]ecord Number   |
|3. View [S]tudent Number  |
|4. [Q]uit                 |
----------------------------

Enter your selection:

As you can see dummied out in the code, I tried clearing the keybuffer, but it didn't help. Anyone know what's going on?

That's what I tried before; it ends up making it worse. Specifically, with the extra line of code, it never accepts my input at all.

Easy way to do it:

Code:

scanf(" %c", &in);

Thanks ever so, tabstop.

Only two, both looking for integers, though I do have fscanfs.