Write a program to find the factorial of a number in C

 From this example, we will understand that how to find the factorial of any number using C Programming Language.

To understand this program, you should have knowledge of these C programming Topics :

• Data Types in C
• Do-while Loop in C

Write a program to find factorial of a number in C ?

 Program 

Using do-while Loop

#include<stdio.h>
#include<conio.h>
void main()
{
       int num,fact=1;
       clrscr();
       printf("\n Enter the no =");
       scanf("%d",&num);

       do
       {
               fact=fact*num;
               num=num-1;
       }
       while(num>=1);
       printf("\n Factorial = %d",fact);
       getch();
}

 Output 

Enter the no = 5

Factorial = 120