Dosoky c

define.c

#include <stdio.h>
void change(int* xp){   //define "declare" pointer called xp , type "int*" NOT "int"
	printf("0:%d\n",*xp); //print x - the value which pointer points to - old value
	*xp=6;              // change the value of x - using its addr -
	printf("1:%d\n",*xp); //print x - the value which pointer points to - new value
	printf("5:%p\n",xp); // print the pointer " the addr of var. x"
	printf("2:%p\n",&xp); //print the addr of the pointer xp
}
int main(){
	int x=5;
	printf("4:%p\n",&x); //print the addr of int x " x pointer"
	change(&x);   // send the addr of int x to change fn
	printf("3:%d\n",x); //print the value of int x - the new value- 
	return 0;
}