What is Factorial?

The Factorial of a specified number refers to the product of a given series of consecutive whole numbers beginning with 1 and ending with the specified number
We use the “!” to represent factorial
Eg.
5! = 1 x 2 x 3 x 4 x 5 = 120

It’s A Fact!
The number of ways of arranging n objects is n!
n! = n x (n − 1) x (n − 2) x . . . x 3 x 2 x 1

To Find Factorial Of A Number Using C Program

Factorial program in c using for loop

/**
Factorial program in c using for loop by codebind.com
*/

#include<stdio.h>
int main(){
  int i,f=1, num;

  printf("Enter a natural number: ");
  scanf("%d", &num);

  for(i=1;i<=num;i++)
    f = f * i;

  printf("%d! = %d\n", num, f);
  return 0;
}
/*
OUTPUT:
Enter a natural number: 5
5! = 120
*/

How do you implement the factorial function in C

/**
Factorial program in c using Using function by codebind.com
*/

#include<stdio.h>

int Factorial(int num){
    int i,f=1;

    for(i=1;i<=num;i++)
      f=f*i;

     return f;
}
int main(){
  int i,factorial,num;

  printf("Enter a natural number: ");
  scanf("%d",&num);

  factorial = Factorial(num);
  printf("%d! = %d\n", num, factorial);

  return 0;
}

/*
OUTPUT:
Enter a natural number: 5
5! = 120
*/

Write A C program to print Factorial series in a given range

/**
Write A C program to print Factorial series in a given range by codebind.com
*/

#include<stdio.h>
int main(){
  long f=1;
  int i,num,min,max;

  printf("Enter the minimum range: ");
  scanf("%d",&min);

  printf("Enter the maximum range: ");
  scanf("%d",&max);

  printf("Factorial series in given range: ");
  for(num=min;num<=max;num++){
    f=1;

    for(i=1;i<=num;i++)
      f=f*i;

    printf("%ld ",f);
  }

  return 0;
}

/*
OUTPUT:
Enter the minimum range: 1
Enter the maximum range: 10
Factorial series in given range: 1 2 6 24 120 720 5040 40320 362880 3628800
*/

Write a C program to find Factorial using recursion

/**
Write A C program to find Factorial using recursion by codebind.com
*/

#include<stdio.h>

int Factorial(int i){
  int result = 1;
  while (i > 0) {
    result = result * i;
    i = i-1;
  }
  return(result);
}
int main(){
  int i,factorial,num;

  printf("Enter a natural number: ");
  scanf("%d",&num);

  factorial = Factorial(num);
  printf("%d! = %d\n", num, factorial);

  return 0;
}

/*
OUTPUT:
Enter a natural number: 5
5! = 120
*/