&& c++

#include <iostream>
using namespace std;

int main() {
    int num1 = 10;
    int num2 = 20;
    int ptr1, ptr2;

    ptr1 = &num1;
    ptr2 = &num2;

    cout << "Value of num1: " << num1 << endl;
    cout << "Value of num2: " << num2 << endl;
    cout << "Address of num1: " << &num1 << endl;
    cout << "Address of num2: " << &num2 << endl;
    cout << "Value of ptr1: " << *ptr1 << endl;
    cout << "Value of ptr2: " << *ptr2 << endl;

    return 0;
}

Explanation:

• #include <iostream>: Includes the input-output stream header file that allows input and output operations.
• using namespace std;: Enables the usage of entities in the standard C++ library without explicitly qualifying their names with std::.
• int main() { ... }: The main function where the execution of the program begins.
• int num1 = 10; and int num2 = 20;: Declaration and initialization of two integer variables num1 and num2 with values 10 and 20, respectively.
• int ptr1, ptr2;: Declaration of two integer pointers ptr1 and ptr2.
• ptr1 = &num1; and ptr2 = &num2;: Assigns the memory addresses of num1 and num2 to the pointers ptr1 and ptr2, respectively.
• cout << "Value of num1: " << num1 << endl; and cout << "Value of num2: " << num2 << endl;: Outputs the values of num1 and num2 to the console.
• cout << "Address of num1: " << &num1 << endl; and cout << "Address of num2: " << &num2 << endl;: Outputs the memory addresses of num1 and num2 to the console.
• cout << "Value of ptr1: " << ptr1 << endl; and cout << "Value of ptr2: " << ptr2 << endl;: Outputs the values pointed to by ptr1 and ptr2 (which are the values of num1 and num2, respectively) to the console using dereferencing.
• return 0;: Indicates successful termination of the main() function.