/* Functions - pass by copy */

#include <stdio.h>

void func(int number);

void main(void) {

  int no;

  no = 6;

  func(no);

  printf("%i", no);

  func(10);
}

void func(int number) {

  number = number + 12;
}

/* OUTPUT
 *
 * 6
 *
 */