Example: Find Largest Number Among Three (Nested if-else) in C++

// Find Largest Number Among Three (Nested if-else)
#include <iostream>
using namespace std;

int main() {
    // Step 1: Declare three variables to store the numbers
    float num1, num2, num3;

    // Step 2: Prompt the user to enter three numbers
    cout << "Enter three numbers: ";
    cin >> num1 >> num2 >> num3;

    // Step 3: Use nested if-else to find the largest number
    if (num1 >= num2) {
        // num1 is greater than or equal to num2
        if (num1 >= num3) {
            // num1 is also greater than or equal to num3
            cout << "The largest number is: " << num1 << endl;
        } else {
            // num3 is greater than num1 (and num1 >= num2)
            cout << "The largest number is: " << num3 << endl;
        }
    } else {
        // num2 is greater than num1
        if (num2 >= num3) {
            // num2 is also greater than or equal to num3
            cout << "The largest number is: " << num2 << endl;
        } else {
            // num3 is greater than num2 (and num2 > num1)
            cout << "The largest number is: " << num3 << endl;
        }
    }

    return 0;
}