Thread: C Preprocessing

Hello
Is there a program that can remove the functions in a program by preprocessing

Code:

#include<stdio.h>
int is_even(int number);
int main(void)
{
	if(is_even(number))
	{
		printf("%d is even", number);
	}
}


int is_even(int number)
{
	return number%2 ==0
}

To something like

Code:

#include<stdio.h>
int is_even(int number);
int main(void)
{
	if( number%2 ==0 )
	{
		printf("%d is even", number);
	}
}

I use the "-E" option when compiling with gcc on linux but its output still contains funcitons. Is there a preprocessing program that can remove functions from a program?
Thanks