Programming :: Function Pointers With Variable Arguments

I need to call functions that match an input string (if input str = "func1", call func1), so I have this:

Code:
#include <stdio.h>
#include <string.h>
void function_a(void) { printf("Function A
"); }

[Code].....

In the above example, the functions take no input arguments. Can they take a different number of arguments, for example, function_a(int), function_c(int, int), function_e(int, char, int)? How can I do that?