So you have already checked that they've entered numbers between 1 and 3?

Then what you are saying is
if (x == '1') {
do something;
}
if (x =='2' {
do s/t;
etc...

better yet...

switch (x) {
case '1':
{
do something:
}
break;
case '2':

{
do something:
}
break;
case '3':

{
do something:
}
break;
default:
printf("Please enter values between 1 and 3!");
break;
}

Let me know if this helps or if I understand.

Gianni