Just receive numbers (0-9) as input.

I tried something like that:

Code:

---

//Receive the max questions of the game
    //Receive the max questions of the game
    do {
    printf("\nHow Many questions at all game? (I.E: 10)\n");
    scanf("%d",&max_questions); } while(isdigit(max_questions) != 0);

---

But he receives letters too, and this causes a big problem on my App, whats wrong here?

I dont know too much about isdigit(), I think he return 1+ when is just numbers and 0 when its an char, right?

Someone can help? this seems to be easy for those who knows :)
Thanks!!!!

I want to use isdigit(), I think the problem is that I need to send an char for isdigit instead int, right?

or maybe because I didnt wrote well the do...while loop.