Question

C++

The following variables are defined:

int a, b;
int *p = &a;

Write a program line using p:

1) saves 25 inside a;

2) maintains the value of a in variable b;

3)saves b address inside p.

Answer 1

Program Screenshot:

Sample Output:

Program code:

#include <iostream>

using namespace std;

int main()
{
int a, b;
// save 25 inside a
a = 25;
int *p = &a;
// maintains the value of a in variable b;
b = *p; // or b = a;
// saves b address inside p.
p = &b;
// display value of b
cout<<"The value of b : "<<b;
// display b address
cout<<"\nThe value of p : "<<p;
cout<<"\n";
return 0;
}