To find the Factorial of any number in C programming language .

• What is Factorial number ?

Ans-

In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. For example,

{\displaystyle 5!=5\times 4\times 3\times 2\times 1=120.\ }

The value of 0! is 1, according to the convention for an empty product.

Some Factorial numbers n! of number n. Examples:—-

Write a  Program in C prgramming language in some  way or method following below:-

Code 1: 

1. -C code for factorial of a number
2. C program to find the factorial of a given number
3. Factorial program in c using while loop
4. Factorial program in c without using recursion

#include

int main(){

  int i=1,f=1,num;

  printf("Enter a number: ");

  scanf("%d",&num);

  while(i

Sample output:
Enter a number: 5
Factorial of 5 is: 120
Code 2:
 Factorial program in c using for loop
 Simple factorial program in c
 C program to calculate factorial
#include

int main(){

  int i,f=1,num;

  printf("Enter a number: ");

  scanf("%d",&num);

  for(i=1;i

Code 3:
 Factorial program in c using pointers
 How to calculate factorial in c
 Factorial program in c language
#include

void findFactorial(int,int *);

int main(){

  int i,factorial,num;

  printf("Enter a number: ");

  scanf("%d",&num);

  findFactorial(num,&factorial);

  printf("Factorial of %d is: %d",num,*factorial);

  return 0;

}

void findFactorial(int num,int *factorial){

    int i;

    *factorial =1;

    for(i=1;i

Code 4:
 Factorial program in c using function
 C program to find factorial of a number
#include

int findFactorial(int);

int main(){

  int i,factorial,num;

  printf("Enter a number: ");

  scanf("%d",&num);

  factorial = findFactorial(num);

  printf("Factorial of %d is: %d",num,factorial);

  return 0;

}

int findFactorial(int num){

    int i,f=1;

    for(i=1;i

Sample output:
Enter a number: 8
Factorial of 8 is: 40320

Code 5:
 Factorial series in c
#include

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
Sample 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
Algorithm:


Factorial value
Factorial of number is defined as:
Factorial (n) = 1*2*3 … * n
For example: Factorial of 5 = 1*2*3*4*5 = 120
Note: Factorial of zero = 1
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