recursion function bangla

#include <stdio.h>

// Function prototype
int factorial(int n);

int main() {
    // Input
    int num;
    printf("Enter a number: ");
    scanf("%d", &num);

    // Function call and output
    printf("Factorial of %d = %d\n", num, factorial(num));

    return 0;
}

// Recursive function to calculate factorial
int factorial(int n) {
    // Base case
    if (n == 0 || n == 1)
        return 1;
    else
        // Recursive call
        return n * factorial(n - 1);
}