Question
Let us discuss the following code and determine the outoput. #include <stdio.h> int main() { int...
Let us discuss the following code and determine the outoput.
#include <stdio.h>
int main()
{
int a=10; //normal variable
int *ptr_a; //pointer variable
ptr_a = &a;
int **ptr_ptra; //pointer to pointer
ptr_ptra = &ptr_a;
printf("value of a: %d\n",a);
printf("value of a using pointer: %d\n",*ptr_a);
printf("value of a using pointer to pointer:
%d\n",**ptr_ptra);
return 0;
}
Homework Answers
Answer #1
#include<iostream>
#include <iomanip>
using namespace std;
#include <stdio.h>
int main()
{
int a=10; //normal variable
int *ptr_a; //pointer variable
ptr_a = &a;
// ptr_a is pointing to memory location of a
// *ptr_a is used to get the value at address a
int **ptr_ptra; //pointer to pointer
ptr_ptra = &ptr_a;
// ptr_ptra points to memory location of ptr_a
// *ptr_ptra is used to get the value at address ptr_a
// **ptr_ptra is used to get the value at address a
printf("value of a: %d\n",a);
printf("value of a using pointer: %d\n",*ptr_a);
printf("value of a using pointer to pointer: %d\n",**ptr_ptra);
return 0;
}
value of a: 10 value of a using pointer: 10 value of a using pointer to pointer: 10
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