Help needed calling C function using variable name

Hi All,
I have 100 functions which have similar name but different in last few characters. for example, void get_fun1(void), void get_fun2(void), void get_fun3(void), ..........etc void get_fun100(void).


Now i want to call those functions with a single variable dynamically. I can say like, i will get some number from some other module. If i get the value as 3 from that other module, i should call that function as get_fun3().

So i need a generic "function calling" statement to invoke any one of the function out of hundred.

i came to know that there is a methodology like .....

Code:

---

#define get(x) get_##x()
void get_1()
{
printf("\nOne");
}
void get_2()
{
printf("\nTwo");
}
void main()
{
int i;
scanf("%d",&i);
get(1);
}

---

If i pass the static values (1,5,8...) to the get() function in the above code, it is working good. Suppose if i pass the value as a variables (i), it is not working.

Can any one suggest me how to solve this issue?

Thanks in advance,
Raghunadhs

Just use an array of function pointers. That way you needn't mess around with all that messy scanf() stuff...

Code:

---

#include "stdio.h"

void func_0()
{
  printf("this is func_0()\n");
}

void func_1()
{
  printf("this is func_1()\n");
}

void func_2()
{
  printf("this is func_2()\n");
}


typedef void (*pfunc)(); //function pointer data type definition

int main(int argc, char** argv)
{
  //declare an array of function pointers (you can use macros for this if you like)
  pfunc functions[3] = { func_0, func_1, func_2 };

  //declare the integer that chooses what function gets called...
  int funcNumber = 0;

  functions[funcNumber++](); //0
  functions[funcNumber++](); //1
  functions[funcNumber++](); //2


  return 0;
}

---

Thank you very much wossname, it helped me a lot.

You are most welcome. :thumb: