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Ass2_2B.c
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Ass2_2B.c
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/*
============================================================================
Name : Ass2_2B.c
Author :
Version :
Copyright : Your copyright notice
Description : Hello World in C, Ansi-style
============================================================================
*/
#include <stdio.h>
#include <stdlib.h>
int main(void) {
int *ptr; //creates pointer
int x; //creates variable x
ptr = &x; //set pointer to point at x by storing x's address into ptr
*ptr = 0; //sets value at its stored address to 0 --> sets x = 0;
printf(" x = %d\n", x); //prints value of x, which is 0
printf(" *ptr = %d\n", *ptr); //prints value stored at address pointed to by ptr, which is x's value, which is 0
*ptr += 5; //adds 5 to current value of where ptr is pointing to (x), which is 0+5 --> x = 5;
printf(" x = %d\n", x); //prints value of x, which is now 5
printf(" *ptr = %d\n", *ptr); //prints value stored at address pointed to by ptr, which is x, which is 5
(*ptr)++; //adds 1 to value stored at address pointed to by ptr (x) which is x = 5+1 = 6;
printf(" x = %d\n", x); //x is now 6
printf(" *ptr = %d\n", *ptr); //prints value stored at address pointed to by ptr, which is x, which is 6
return 0;
}