Factorial

Easy Recursion PRO

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Problem Statement

Write a C program using recursion to calculate the factorial of a given number N.

Input Format

An integer N.

Output Format

Print the factorial result.

Constraints

0 <= N <= 12

Sample Input

Sample Output

Explanation

Recursive relation: fact(n) = n * fact(n-1) with base case fact(0) = 1.

Starter Code

#include <stdio.h>

long long factorial(int n) {
    // Write your recursive logic here
}

int main() {
    int n;
    if (scanf("%d", &n) == 1) {
        printf("%lldn", factorial(n));
    }
    return 0;
}

Limits

Time Limit: 1s
Memory Limit: 256MB

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