Factorail for a non integer number

Question

Print a non negative number less than 7 and get the factorial for the non negative number

Answer 1

The problem with this question is the factorial of 0:

Non-negative number: 0   Factorial: 1

The rest are easy to understand.

Number: 1   Factorial: 1
Number: 2   Factorial: 2
Number: 3   Factorial: 6
Number: 4   Factorial: 24
Number: 5   Factorial: 120
Number: 6   Factorial: 720
Number: 7   Factorial: 5040

So, if you need code you can just print the results (without calculating anything).

https://onlinegdb.com/P9R0ojB1Q

#include <stdio.h>

int main(int argc, char *argv[])
{
    if (argc != 2) {
        printf("No number provided");
        return 1;
    }

    int input=atoi(argv[1]);

    if(input < 0) {
        printf("Number less than 0");
        return 2;
    }

    if(input > 7) {
        printf("Number larger than 7");
        return 3;
    }
    
    switch(input) {
        case 0:  printf("Non-negative integer: 0 Factorial: 1");    break;
        case 1:  printf("Non-negative integer: 1 Factorial: 1");    break;
        case 2:  printf("Non-negative integer: 2 Factorial: 2");    break;
        case 3:  printf("Non-negative integer: 3 Factorial: 6");    break;
        case 4:  printf("Non-negative integer: 4 Factorial: 24");   break;
        case 5:  printf("Non-negative integer: 5 Factorial: 120");  break;
        case 6:  printf("Non-negative integer: 6 Factorial: 720");  break;
        case 7:  printf("Non-negative integer: 7 Factorial: 5040"); break;
    }

    return 0;
}

Answer 2

import math

# Get input from user
num = int(input("Enter a non-negative number less than 7: "))

# Validate the input
if 0 <= num < 7:
    # Calculate factorial
    factorial = math.factorial(num)
    print(f"The factorial of {num} is {factorial}")
else:
    print("Invalid input. Please enter a non-negative number less than 7.")

Answer 3

import java.util.Scanner;

public class Main 

{

    public static void main(String[] args) 

{

        Scanner sc = new Scanner(System.in);

        System.out.print("Enter a non-negative number less than 7 ");

        int num = sc.nextInt();

        if (num < 0 || num >= 7) 

{

            System.out.println("Invalid input! Number must be between 0 and 6");

        } else 

{

            int factorial = 1;

            for (int i = 1; i <= num; i++) 

{

                factorial *= i;

            }

            System.out.println("Factorial of " + num + " is" + factorial);

        }

    }

}

Answer 4

https://onlinegdb.com/uWJ9GnzIC

Is it solving the asked query?