Call by reference ( Example )

void swap(int *x, int *y)



{

  int temp;

  temp = *x;

  *x = *y;

  *y = temp;

  printf("Swapped values are a = %d and b = %d", *x, *y);

}

void main()

{

  int a = 7, b = 4;

  swap(&a, &b);

  printf("Original values are a = %d and b = %d",a,b);

  printf("The values after swap are a = %d and b = %d",a,b);

}  



Output:

  Original Values are a = 7 and b = 4

  Swapped values are a = 4 and b = 7