case 1 or 2 c++

Case 1: C++

#include <iostream>

int main() {
    std::cout << "Hello, Case 1!";
    return 0;
}

Explanation for Case 1:

1. The #include <iostream> directive includes the input/output stream library for C++.
2. The int main() function is the entry point of the program.
3. std::cout << "Hello, Case 1!"; outputs the string "Hello, Case 1!" to the console.
4. return 0; indicates successful program termination to the operating system.

Case 2: C++

#include <iostream>

int main() {
    int x = 5;
    int y = 7;
    int sum = x + y;
    std::cout << "The sum of " << x << " and " << y << " is " << sum;
    return 0;
}

Explanation for Case 2:

1. The #include <iostream> directive includes the input/output stream library for C++.
2. The int main() function is the entry point of the program.
3. int x = 5; declares and initializes an integer variable x with the value 5.
4. int y = 7; declares and initializes an integer variable y with the value 7.
5. int sum = x + y; calculates the sum of x and y and stores it in the variable sum.
6. std::cout << "The sum of " << x << " and " << y << " is " << sum; outputs the sum of x and y to the console.
7. return 0; indicates successful program termination to the operating system.