Write a program to find the factorial value of any number entered through the keyboard.

main()
{
 unsigned int f=1;
 int num,i;
 printf("Enter any number to calculate its factorial value :- ");
 scanf("%d",&num);
 i=num;
 while(i>0)
 {
  f=f*i;
  i--;
 }
 printf("Factorial of %d is %u.",num,f);
 getch();
}

Output:-