C++ New Lines

#include <iostream>

int main() {
    // Declare variables
    int a, b, sum;

    // Assign values to variables
    a = 5;
    b = 7;

    // Perform addition
    sum = a + b;

    // Display the result
    std::cout << "Sum: " << sum << std::endl;

    return 0;
}

#include <iostream>

int main() {
    // Declare and initialize variables
    int x = 10, y = 20, result;

    // Perform multiplication
    result = x * y;

    // Display the result
    std::cout << "Result: " << result << std::endl;

    return 0;
}

#include <iostream>

int main() {
    // Declare variables
    double radius, area;

    // Prompt user for input
    std::cout << "Enter the radius: ";
    std::cin >> radius;

    // Calculate area
    area = 3.14  radius  radius;

    // Display the result
    std::cout << "Area: " << area << std::endl;

    return 0;
}

#include <iostream>

int main() {
    // Declare constant
    const double PI = 3.14159;

    // Declare variables
    double radius, circumference;

    // Prompt user for input
    std::cout << "Enter the radius: ";
    std::cin >> radius;

    // Calculate circumference
    circumference = 2  PI  radius;

    // Display the result
    std::cout << "Circumference: " << circumference << std::endl;

    return 0;
}

#include <iostream>

int main() {
    // Declare and initialize variables
    int num1 = 10, num2 = 5, quotient;

    // Perform division
    quotient = num1 / num2;

    // Display the result
    std::cout << "Quotient: " << quotient << std::endl;

    return 0;
}