In C, if you a user has the option of entering an integer and a char at any time he wants...what data type should I use take the input from the user?

Example: Suppose I have the following table...

State	State0	State1
A	B	C
B	A	C
C	C	A

Starting state :A

When the program starts...it displays "A"...the user has the option of entering 0,1 or c or d.

If the state is at A and the user enters "0" then the state changes to B and the program displays "B". After that if the user enter 1 then it goes to C and prints out "C".

My question is that the user has the option of pressing 'c' at any time. The character 'c' is followed by a `1' or a `0' followed by the name of a state (i.e. a single letter in the range AC). This command modifies the state machine such that the `0' (or `1') command applied to the current state will cause the machine to change to the named state and that this change is the state machine configuration will continue. This command should produce no output

How would I read the input from the user when the user has the option of entering int or char at any time?