summation of numbers using function

#include <iostream>

// Function declaration
int sum(int a, int b);

int main() {
    // Input values
    int num1, num2;

    // Get user input
    std::cout << "Enter first number: ";
    std::cin >> num1;
    std::cout << "Enter second number: ";
    std::cin >> num2;

    // Function call and output result
    std::cout << "Sum: " << sum(num1, num2);

    return 0;
}

// Function definition
int sum(int a, int b) {
    return a + b;
}