u3p1

Program to find factorial of a given number.

 #include<iostream.h>  
 #include<conio.h>  
 void factorial(int x)  
 {  
  int fact=x;  
  for(int i=x;i>1;i--)  
  {  
    fact = fact*(i-1);  
  }  
  cout<<"factorial of "<<x<<" is : "<<fact;  
 }  
 void main()  
 {  
      clrscr();  
      int num;  
      cout<<"Program to find Factorial using USer Defined Function.";  
      cout<<"\n\nEnter a number : ";  
      cin>>num;  
      factorial(num);  
      getch();  
 }  

OUTPUT :