test.cpp

#include <iostream>
#include <string>

// Function to greet the user
void greetUser(const std::string& name) {
    std::cout << "Hello, " << name << "! Welcome to C++.\n";
}

// Function to compute factorial
int factorial(int n) {
    int result = 1;
    for (int i = 1; i <= n; ++i)
        result *= i;
    return result;
}

int main() {
    std::string name;
    int number;

    // Change
    int a = 0;

    // Ask for user's name
    std::cout << "Enter your name: ";
    std::getline(std::cin, name);
    greetUser(name);

    // Ask for a number to compute factorial
    std::cout << "Enter a positive integer to compute its factorial: ";
    std::cin >> number;

    if (number < 0) {
        std::cout << "Factorial is not defined for negative numbers.\n";
    } else {
        std::cout << "Factorial of " << number << " is " << factorial(number) << "\n";
    }

    // Simple loop demonstration
    std::cout << "Counting from 1 to 5:\n";
    for (int i = 1; i <= 5; ++i) {
        std::cout << i << " ";
    }
    std::cout << "\n";

    return 0;
}