Thread: How to read single or multiple value from user without using array or loop?

Hi guys, just wondering how can I read a user input without using loop or array method?

I have a requirement which allowed user to enter a random combination with alphabet A, B and C.

For example, user allowed to input A only, or A and B, or A, B and C and so on.

How it work with

Code:

scanf()

?

As I know if I am using

Code:

scanf("%c%c%c", &x,&y,&z)

, it forced user to enter 3 times. How can I allowed user to enter freely between the 3 alphabet and apply condition accordingly?