## Write a program to that read the non negative integers & compute & prints its factorial. (5! = 5*4*3*2*1 = 120).

The factorial of a non-negative integer n is written n! (stated “n factorial”)

and is defined as follows:

n! = n×(n-1)×(n-2). . . × 1 (for values of n more than 1)

### What is factorial?

The factorial, symbolized via an exclamation mark (!), is a quantity defined for all integer s more than or same to zero.

For an integer n extra than or identical to one, the factorial is the made from all integers much less than or identical to n however more than or equal to one. The factorial fee of 0 is defined as same to one. The factorial values for negative integers aren't defined.

Mathematically, the formulation for the factorial is as follows. If n is an integer extra than or identical to one, then

*n*! =

*n*(

*n*- 1)(

*n*- 2)(

*n*- 3) ... (3)(2)(1)

If

*p*= 0, then*p*! = 1 by convention.
The
factorial is of hobby to wide variety theorists. It frequently arises in
probability calculations, particularly those regarding mixtures and
permutations. The factorial also arises every now and then in calculus and
physics.

## Code:

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,n;

b=1;

printf("Enter The Number ");

scanf("%d",&n);

for (a=1;a<=n;a++)

b=b*a;

printf("Factorial Is %d",b);

getch();

clrscr();

}

### Output:

*Try it yourself.*

*If you have any problem you can tell me on comment box i will help you.*

*thanks.*
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