Function004

Write a function to calculate the factorial value of any integer entered through the keyboard.
N.B. It will work up to nineteen number. 

#include <stdio.h>
#include <conio.h>
long       fact ( int );                                     /* Function prototype declaration */
void main ( )
{
          int         no;
          long      factorial;
          clrscr ( );
                                        
          printf("\n\n\t\t Enter a number...:"); scanf("%d", &no);
                                        
          factorial = fact ( no );                        /* Function calling */
                                      
          printf("\n\n\t\t FACTORIAL OF %d = % ld", no, factorial);
          getch ( );
}                                 
                                    
long  fact ( int    j )                                  /* Function Definition */
{                              
          int       i;
          long    f = 1;
                                   
          for ( i = 1; i <= j; i++ )
          {                                     
                          f = f * i;
          }
                                
          return ( f );
}

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