#include <stdio.h>

void countDown(int n) {
    if (n <= 0) {
        printf("Countdown complete!\n");
    } else {
        printf("%d\n", n);
        countDown(n - 1);  // Recursive call
    }
}

int main() {
    int start = 5;
    countDown(start);
    return 0;
}

/*
Recursion is a concept in programming where a function calls itself. It's like a 
loop, but instead of repeating a block of code, the function calls itself to solve
a smaller part of the problem.*/