#include<stdio.h>

int main(void)
{
	int var1 = 0, var2 = 20;
	//Constant Pointer
	//The ptr is a constant . I cannot change the value of the pointer.
	int* const ptr1 = &var1;
	//Can't do this
	//ptr1 = &var2;
	//or this
	//int *const ptr2   ;
	//Can change the value of what the pointer points to

	*ptr1 = 100 ;
	printf("%d  %d\n", *ptr1, var1 );
	return 0;}