Question

I need help with my C coding homework. If possible can you please comment to help me understand whats going on in the code. Thanks in advance.

Create a C program (3 points): o At the top of the file include the following comments: Your name The purpose (core concept found below) of the program The date created o Create two int variables: Initialize each to different values. o Create three pointers: Point the first two pointers to the first variable Point the third pointer to the second variable Display the memory addresses and values of both variables. Include an appropriate output messages. o Display the contents of all pointers. Include an appropriate output messages. o Display the values of the memory location each pointer points to oChange the value of the first variable. o Display the value of the first variable. Include an appropriate output message. Display the values of the memory locations for the pointers that point to the first variable. Include an appropriate output message oUse the third pointer to change the value at the memory location the third pointer points to. o Display the value of the memory location the third pointer points to. Include an appropriate output message. o Display the value of the second variable. Include an appropriate output message. Compile and run your code. Submit your source code as a plain text file with a .c extension. Make sure it compiles without error before submitting it.

Answer 1

//Gaurav ponkiya
//Core concept of this program is to understand pointer
//09-nov-18
#include<stdio.h>
int main()
{
int a=5,b=6;//Two int variable with different values
int *p1,*p2,*p3;
p1=p2=&a;
p3=&b;
printf("Initial value of two integers are a=5,b=6\n");
printf("Memory Address=%d\nValue=%d\n",p1,*p1);

printf("Memory Address=%d\nValue=%d\n",p3,*p3);
printf("Content of all pointers\nFirst pointer points to->%d\nSecond pointer points to->%d\nthird pointer points to->%d\n",*p1,*p2,*p3);
printf("Memory location points by Each pointer\np1=%d\np2=%d\np3=%d\n",p1,p2,p3);
a=8;//change the value of first variable
printf("value of first variable=%d\n",*p1);
*p3=10;//changing value which is pointed by third pointer
printf("Memory location the third pointer points to is %d\n",p3);
printf("Value of second variable=%d",*p3);
return 0;
}