#include <iostream>
 
void f1(void)
{
  std::cout << "you are in f1" << std::endl;
}
 
void f2(void)
{
	std::cout << "you are in f2" << std::endl;
}
void f3(void)
{
	std::cout << "you are in f3" << std::endl;
}
 
void f4(void)
{
	std::cout << "you are in f4" << std::endl;
}
 
 
void (*p[4]) (void);
 
int main(void)
{
  int result;
  int i, j, op;
 
  p[0] = f1;
  p[1] = f2;
  p[2] = f3;
  p[3] = f4;
 
    for(auto i= 0; i<4; ++i)	
	{
		(*p[i])();
	}
 
	return 0;
}
 

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