#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>

typedef int (*myfunc) (int a);

int doubleit (int a);
int square (int a);
int process (myfunc f, int a);
int main (int argc, char **argv);
char chr (int a);

int doubleit (int a) {

 return 2*a;
}

int square (int a) {

 return a*a;
}


int process (myfunc f, int a) {

 if (f==doubleit) printf ("Doubling\n");
 if (f==square) printf ("Squaring\n");
 return f(a);
}

int main (int argc, char **argv) {

  int x;

 srand (time(NULL));
/*
 printf ("%d\n",process (doubleit,100));
 printf ("%d\n",process (square,100));
*/
 if (rand()%2==0) x = process(doubleit,100);
 else x = process (square,100);
 printf ("%d\n",x);
 printf ("%d\n",process(chr,32));
 return 0;
}

char chr (int a) {

 return a;
}