define the following with suitable example else if statement in c++

Example 1: if else program in c ++

if (condition) {
    // block of code if condition is true
}
else {
    // block of code if condition is false
}

Example 2: if else program in c ++

// Program to check whether an integer is positive or negative
// This program considers 0 as a positive number

#include <iostream>
using namespace std;

int main() {
     int number;

    cout << "Enter an integer: ";
    cin >> number;
    if (number >= 0) {
        cout << "You entered a positive integer: " << number << endl;
    }
    else {
        cout << "You entered a negative integer: " << number << endl;
    }
    cout << "This line is always printed.";
    return 0;
}