int main ()
{
   // Declarations
   char ControlKey, Key;
   int Years;
   float Sum;

   // print name and ID
   // Print the main menu:
  
   // start main loop
   {
      
      // Get the sport which the user is interested in:
      // Using a switch that moves according to the user sport,
      // get the number of years and call the appropriate functon.

      // print the output of the sum value in decimal numbers with fixed
      // notation and two
      // decimal accuracy.
      // Ask users if they wish to continue or quit, use loops to take the
      // appropriate action.
   } // end loop

return 0;
}

//---------------------------------------------------------------------------//
//     Program:  prog3a.c
//
//
//
//     Purpose:  This program simulates an ESPN ordering system for
//     several sports.
//
//
//     Comments: This program uses the "toupper" function which translates
//     all lowercase input letters to their corresponding
//     uppercase equivalent. All other input values are
//     returned unchanced.
//
//
//---------------------------------------------------------------------------//

#include <stdio.h>
#include <ctype.h>

//---------------------------------------------------------------------------
//
//
//     Purpose: This function calculates the appropriate numbers for
//    Hockey
//
//
//---------------------------------------------------------------------------
void Hockey (float *Amount, const int NumOfYrs)
{
const float PRE = 0.5;
const float REG = 1.0;
const float PLAY = 2.5;
int Preseason, Regular, Playoff;
int i;
        printf("_______________________________________\n");
        printf("Preseason Games cost $0.50 a game.\n");
        printf("Regular Season Games cost $1.00 a game.\n");
        printf("Playoff Games cost $2.50 a game.\n");
        printf("_______________________________________\n");
        printf("\nHow many Preseason Games per year you want? ");
        scanf("%d", &Preseason);
        printf("How many Regular Season Games per year do you want? ");
        scanf("%d", &Regular);
        printf("How many Playoff Games per year do you want? ");
        scanf("%d", &Playoff);
        for (i=0; i < NumOfYrs; i++)
                *Amount += Preseason * PRE + Regular * REG + Playoff * PLAY;
        printf("\n*** You have ordered %d years of Great Hockey.\n", NumOfYrs);
}

//---------------------------------------------------------------------------
//
//
//     Purpose: This function calculates the appropriate numbers for
//    Basketball
//
//
//---------------------------------------------------------------------------
void Basketball (float *Amount, const int NumOfYrs)
{
const float PRE = 0.5;
const float REG = 1.0;
const float PLAY = 2.25;
int Preseason, Regular, Playoff;
int i;
        printf("_______________________________________\n");
        printf("Preseason Games cost $0.50 a game.\n");
        printf("Regular Season Games cost $1.00 a game.\n");
        printf("Playoff Games cost $2.25 a game.\n");
        printf("_______________________________________\n");
        printf("\nHow many Preseason Games per year you want? ");
        scanf("%d", &Preseason);
        printf("How many Regular Season Games per year do you want? ");
        scanf("%d", &Regular);
        printf("How many Playoff Games per year do you want? ");
        scanf("%d", &Playoff);
        for (i=0; i < NumOfYrs; i++)
                *Amount += Preseason * PRE + Regular * REG + Playoff * PLAY;
                printf("\n*** You have ordered %d years of Great Basketball.\n", NumOfYrs);
}

//---------------------------------------------------------------------------
//
//
//     Purpose: This function calculates the appropriate numbers for Football
//
//
//
//---------------------------------------------------------------------------
void Football(float *Amount, const int NumOfYrs)
{
const float PRE = 0.5;
const float REG = 2.0;
const float PLAY = 3.75;
const float SUPER = 5.20;
int Preseason, Regular, Playoff, Super;
char Answer, ReturnChar;
int i;
        printf("_______________________________________\n");
        printf("Preseason Games cost $0.50 a game.\n");
        printf("Regular Season Games cost $2.00 a game.\n");
        printf("Playoff Games cost $3.75 a game.\n");
        printf("The SuperBowl cost $5.20.\n");
        printf("_______________________________________\n");
        printf("\nHow many Preseason Games per year you want? ");
        scanf("%d", &Preseason);
        printf("How many Regular Season Games per year do you want? ");
        scanf("%d", &Regular);
        printf("How many Playoff Games per year do you want? ");
        scanf("%d", &Playoff);
        printf("Would you like to see the SUPERBOWL? (y/n) ");
        scanf("%c%c", &ReturnChar, &Answer);
        if (Answer == 'y')
                Super = 1;
        else
                Super = 0;
        for (i=0; i < NumOfYrs; i++)
                *Amount += Preseason * PRE + Regular * REG + Playoff * PLAY
                          + Super * SUPER;
        printf("\n*** You have ordered %d years of Great Football.\n", NumOfYrs);
}

//---------------------------------------------------------------------------
//
//
//     Purpose: This function calculates the appropriate numbers for Soccer
//
//
//
//---------------------------------------------------------------------------
void Soccer (float *Amount, const int NumOfYrs)
{
const float PRE = 0.5;
const float REG = 1.0;
const float PLAY = 2.15;
int Preseason, Regular, Playoff;
int i;
        printf("_______________________________________\n");
        printf("Preseason Games cost $0.50 a game.\n");
        printf("Regular Season Games cost $1.00 a game.\n");
        printf("Playoff Games cost $2.15 a game.\n");
        printf("_______________________________________\n");
        printf("\nHow many Preseason Games per year you want? ");
        scanf("%d", &Preseason);
        printf("How many Regular Season Games per year do you want? ");
        scanf("%d", &Regular);
        printf("How many Playoff Games per year do you want? ");
        scanf("%d", &Playoff);
        for (i=0; i < NumOfYrs; i++)
                *Amount += Preseason * PRE + Regular * REG + Playoff * PLAY;
        printf("\n*** You have ordered %d years of Great Soccer.\n", NumOfYrs);

int main ()
{
   // Declarations                                                                                                                            
   char ControlKey, Key;
   int Years;
   float Sum;
   char choice;
   char returnchar;

   // print name and ID                                                                                                                    

   printf("JohN Doe ID:0000\n");

   //Check if user wants to continue                                                                                                          

   printf("Welcome! To order professional coverage of your favorite sports, Please enter C to continue or Q to quit:");
   scanf("%c", &choice);

   //while loop to check choice                                                                                                              

   while(choice!='C' && choice!='c' && choice!='Q' && choice!='q')
     {
     printf("Please enter a valid choice:");
     scanf("%c", &choice);
     }
   returnchar=choice;

   //Print out user  choice                                                                                                                  

   printf("Choice:%c:\n", returnchar);

   //Quiting the program                                                                                                                     \
                                                                                                                                              
   if(choice=='Q'||choice=='q')
     {
       printf("Have a good day. Bye!\n");

    }

   //Continuing the program                                                                                                                  \
                                                                                                                                              
   if(choice=='C'|| choice=='c')
     {

   // Print the main menu:                                                                                                                    

       printf("Here is a list of programming choices\n");
       printf("(A) Hockey\n");
       printf("(B) Football\n");
       printf("(C) Basketball\n");
       printf("(D) Soccer\n");
     }

   // start main loop
{

      // Get the sport which the user is interested in:                                                                                      

     printf("Please enter the letter of the sport you wish to order:");
     scanf("%c", &ControlKey);

      // Using a switch that moves according to the user sport, get the number of years and call the appropriate functon.                    

     switch(ControlKey)
     {
   case 'A':
       printf("Plese enter the number of years you wish to order this program:");
       scanf("%d", &Years);
       Hockey(&Sum, Years);
       break;
   case 'B':
       printf("Please enter the number of years you wish to order this program:");
       scanf("%d", &Years);
           Football(&Sum, Years);
           break;

case 'C':
        printf("Please enter the number of years you wish to order this program:");
        scanf("%d", &Years);
        Basketball(&Sum, Years);
        break;
   case 'D':
        printf("Please enter the number of years you wish to order this program:");
        scanf("%d", &Years);
        Soccer(&Sum, Years);
        break;
     }
      // print the output of the sum value in decimal numbers with fixed notation and two decimal accuracy.                                  

     printf("Amount: $%4.2f\n", Sum);

      // Ask users if they wish to continue or quit, use loops to take the appropriate action.                                                

// end loop                                                                                                                              

   }
return 0;
}

int main ()
{
   // Declarations                                                                                                                            
   char ControlKey, Key;
   int Years=0;
   float Sum=0.0;

   // print name and ID                                                                                                                    

   printf("JoHn Doe ID:0000\n");

   //Check if user wants to continue                                                                                                          

   printf("Welcome! To order professional coverage of your favorite sports, Please enter C to continue or Q to quit:");
   scanf("%c", &Key);

   //while loop to check choice                                                                                                              

while(Key!='C' && Key!='c' && Key!='Q' && Key!='q')
     {
     printf("Please enter a valid choice:");
     scanf("%c", &Key);
     }


   //Print out user  choice                                                                                                                  

   printf("Choice:%c:\n", Key);


   //Continuing the program                                                                                                                  

   while((Key=='C'|| Key=='c'))
   {
   // Print the main menu:                                                                                                                    

       printf("Here is a list of programming choices\n");
       printf("(A) Hockey\n");
       printf("(B) Football\n");
       printf("© Basketball\n");
       printf("(D) Soccer\n");


   // start main loop                                                                                                                        


      // Get the sport which the user is interested in:                                                                                      

     printf("Please enter the letter of the sport you wish to order:");
     scanf("%c", &ControlKey);

      // Using a switch that moves according to the user sport, get the number of years and call the appropriate functon.                    

     switch(ControlKey)
     {
   case 'A':
printf("Plese enter the number of years you wish to order this program:");
       scanf("%d", &Years);
       Hockey(&Sum, Years);
       break;
   case 'B':
       printf("Please enter the number of years you wish to order this program:");
       scanf("%d", &Years);
       Football(&Sum, Years);
       break;
   case 'C':
        printf("Please enter the number of years you wish to order this program:");
        scanf("%d", &Years);
        Basketball(&Sum, Years);
        break;
   case 'D':
        printf("Please enter the number of years you wish to order this program:");
        scanf("%d", &Years);
        Soccer(&Sum, Years);
        break;
     }
  // print the output of the sum value in decimal numbers with fixed notation and two decimal accuracy.                                  

     printf("Amount: $%4.2f\n", Sum);

      // Ask users if they wish to continue or quit, use loops to take the appropriate action.                                                

     printf("Type 'C' to continue:");
     scanf("%c", &Key);
   }
     // end loop                                                                                                                              


   printf("Hae a good day. Bye!\n");

return 0;
}

while(Key!='C' && Key!='c' && Key!='Q' && Key!='q')

while(Key!=='C' && Key!=='c' && Key!=='Q' && Key!=='q')