Case structure005

Create a menu driven program.

#include <stdio.h>
#include <conio.h>

void main ( )
{
             int          cho, no, no1, co, md, fl, s;
             unsigned long    fact;
             clrscr ( );
                                                 
             while ( 1 )
             {                                                    
                      printf ("\n\t\t\tMENU");
                      printf ("\n\t\t\t====");
                      printf ("\n\n\t\t   1. FACTORIAL\n");
                      printf ("\t\t   2. PRIME \n");
                      printf ("\t\t   3. ARMSTRONG \n");
                      printf ("\t\t   4. ODD / EVEN \n");
                      printf ("\t\t   5. EXIT \n");
                                                                           
                      printf ("\n\t\t   Your Choice ?"); scanf ("%d", &cho);
                                                                                       
                      switch ( cho )
                      {                                           
                                 case 1:
                                               fact = 1;
                                               printf ("\n\t Enter the number.......:"); scanf ("%d",&no);
                                                                                                    
                                               for ( co =1; co <= no; co++ )
                                               {                                             
                                                                 fact = fact * co;
                                               }
                                               printf ("\n\t FACTORIAL = %ld", fact);
                                               break;
                                                                
                                 case 2:                    
                                               fl = 0;
                                               printf ("\n\t Enter a number...........:"); scanf ("%d", &no);
                                                                                                                    
                                               for ( co = 2; co < no; co++ )
                                               {                                                        
                                                                  md = no % co;
                                                                  if ( md == 0 )
                                                                  {                                                    
                                                                                fl = 1;
                                                                                break;
                                                                  }
                                               }
                                               if ( fl == 0 )
                                                         printf ("\n\t It is a Prime number");
                                               else                              
                                                         printf ("\n\t It is not a Prime number");
                                               break;
                                                         
                                 case 3:                                
                                               s = 0;
                                               printf ("\n\t Enter a number.........:"); scanf ("%d",&no);
                                               no1 = no;
                                                                                                      
                                               while ( no > 0 )
                                               {                                                      
                                                                 md = no % 10;
                                                                 no = no /10;
                                                                 s = s + ( md * md * md );
                                               }                                                         
                                               if ( no1 == s )
                                                             printf ("\n\t Number = %d is an Armstrong number", no1);
                                               else           
                                                             printf ("\n\t Number = %d is not an Armstrong number",
                                                                              no1);
                                               break;
                                                                      
                                 case 4:      
                                               printf ("\n\t Enter a number.........:"); scanf ("%d",&no);
                                                                            
                                               if ( no % 2 == 0 )
                                                                  printf ("\n\t Even number");
                                               else                                                    
                                                                  printf ("\n\t Odd number");
                                               break;
                                                             
                                 case 5:    
                                               exit ( );
                                                             
                                 default:           
                                               printf("\n WRONG CHOICE.");
                      }
                      getch ( );
                      clrscr ( );
             }

}

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