#include <stdio.h>      
void nextYear(int *y); 
                        
int main(void) {        
  int thisYear;

  thisYear = 1981;
  nextYear(&thisYear);

  printf("Year: %d\n", thisYear);

  return 0;
}

void nextYear(int *y) {
                          
   *y = *y + 1;          
                          
}