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ERROR CATCH Problem

LEESI (39)
The below program has to be modified to throw up an Error msg FOR EXAMPLE "Sorry you have inputed an incorrect choice",I wrote this a few weeks back and now need to add this modification, having trouble actually getting it to work though,i have a few examples of the TRY & CATCH code but the one im trying donesnt seem to throw up the Error msg??

Any help would be great :)

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#include <iostream>

using namespace std;

void roomstart(float start);
void roomexit (float exit);
void roomnorth(float north);
void roomeast (float east);
void roomsouth (float south);
void roomwest (float west);

int main()
{
  try
{
   float function;
   int choice;
//----------------------------MAIN START----------------------------------------------

    cout << "Hello and welcome to Lee's' amazing room game \n\n";
    cout <<"There are 6 rooms\n";
    cout<<"START"<<"\n"<<"NORTH"<<"\n"<<"SOUTH"
    <<"\n"<<"EAST"<<"\n"<<"WEST"<<"\n"<<"EXIT"<<"\n";
    cout << "Which door do you wish to enter?\n";
    cout << "press 1:START,2:NORTH,3:EAST,4:SOUTH,5:WEST,6:EXIT\n";
    cin >> choice;

if (choice == 1)
    {
        roomstart(function);
    }
else if (choice == 2)
   {
      roomnorth(function);
   }
else if (choice == 3)
  {
     roomeast(function);
  }
else if (choice == 4)
{
    roomsouth(function);
}
else if (choice ==5)
{
    roomwest(function);
}
else if (choice ==6)
{
    roomexit(function);
}
}
catch(...)
{
    cout<<"Sorry this is not a correct input answer!\n";
}

cin.get();
cin.get();
return 0;
//---------------------------------rooms-------------------------
}

void roomstart(float function)
{
//START room
 cout<<"-------------START ROOM-------------\n";
 int choice;
//----------------------------START ROOM START----------------------------------------------
  cout <<"There are 5 rooms\n";
  cout<<"NORTH"<<"\n"<<"SOUTH"
  <<"\n"<<"EAST"<<"\n"<<"WEST"<<"\n"<<"EXIT"<<"\n";
  cout << "Which door do you wish to enter?\n";
  cout << "press 2:NORTH,3:EAST,4:SOUTH,5:WEST,6:EXIT\n";
  cin >> choice;

 if (choice == 2)
 {
    roomnorth(function);
 }
else if (choice == 3)
{
   roomeast(function);
}
else if (choice == 4)
{
  roomsouth(function);
}
else if (choice ==5)
{
  roomwest(function);
}
else if (choice ==6)
{
  roomexit(function);
}
}
void roomnorth(float function)
{
//NORTH room
 cout<<"-------------NORTH ROOM-------------\n";
 int choice;
//----------------------------NORTH ROOM START----------------------------------------------
  cout <<"There are 5 rooms\n";
  cout<<"START"<<"\n"<<"SOUTH"
  <<"\n"<<"EAST"<<"\n"<<"WEST"<<"\n"<<"EXIT"<<"\n";
  cout << "Which door do you wish to enter?\n";
  cout << "press 1:START,3:EAST,4:SOUTH,5:WEST,6:EXIT\n";
  cin >> choice;

if (choice == 1)
  {
      roomstart(function);
  }

else if (choice == 3)
{
   roomeast(function);
}
else if (choice == 4)
{
  roomsouth(function);
}
else if (choice ==5)
{
  roomwest(function);
}
else if (choice ==6)
{
  roomexit(function);
}
}
void roomeast(float function)
{
//EAST room
 cout<<"-------------EAST ROOM-------------\n";
 int choice;
//----------------------------EAST ROOM START----------------------------------------------
  cout <<"There are 5 rooms\n";
  cout<<"NORTH"<<"\n"<<"SOUTH"
  <<"\n"<<"WEST"<<"\n"<<"EXIT"<<"\n";
  cout << "Which door do you wish to enter?\n";
  cout << "press 1:START,2:NORTH,4:SOUTH,5:WEST,6:EXIT\n";
  cin >> choice;

if (choice == 1)
  {
      roomstart(function);
  }
else if (choice == 2)
 {
    roomnorth(function);
 }

else if (choice == 4)
{
  roomsouth(function);
}
else if (choice ==5)
{
  roomwest(function);
}
else if (choice ==6)
{
  roomexit(function);
}
}
void roomsouth(float function)
{
//SOUTH room
 cout<<"-------------SOUTH ROOM-------------\n";
 int choice;
//----------------------------SOUTH ROOM START----------------------------------------------
  cout <<"There are 5 rooms\n";
  cout<<"NORTH"<<
  "\n"<<"EAST"<<"\n"<<"WEST"<<"\n"<<"EXIT"<<"\n";
  cout << "Which door do you wish to enter?\n";
  cout << "press 1:START,2:NORTH,3:EAST,4:,5:WEST,6:EXIT\n";
  cin >> choice;

if (choice == 1)
  {
      roomstart(function);
  }
else if (choice == 2)
 {
    roomnorth(function);
 }
else if (choice == 3)
{
   roomeast(function);
}

else if (choice ==5)
{
  roomwest(function);
}
else if (choice ==6)
{
  roomexit(function);
}
}
void roomwest(float function)
{
//WEST room
 cout<<"-------------WEST ROOM-------------\n";
 int choice;
//----------------------------WEST ROOM START----------------------------------------------
  cout <<"There are 5 rooms\n";
  cout<<"NORTH"<<"\n"<<"SOUTH"
  <<"\n"<<"EAST"<<"\n"<<"EXIT"<<"\n";
  cout << "Which door do you wish to enter?\n";
  cout << "press 1:START,2:NORTH,3:EAST,4:SOUTH,6:EXIT\n";
  cin >> choice;

if (choice == 1)
  {
      roomstart(function);
  }
else if (choice == 2)
 {
    roomnorth(function);
 }
else if (choice == 3)
{
   roomeast(function);
}
else if (choice == 4)
{
  roomsouth(function);
}

else if (choice ==6)
{
  roomexit(function);
}
}
void roomexit(float function)
{
//EXIT room
 cout<<"-------------EXIT ROOM-------------\n";
  int choice;
//----------------------------EXIT ROOM START----------------------------------------------
  cout <<"There are 5 rooms\n";
  cout<<"NORTH"<<"\n"<<"SOUTH"
  <<"\n"<<"EAST"<<"\n"<<"WEST"<<"\n";
  cout << "Which door do you wish to enter?\n";
  cout << "press 1:START,2:NORTH,3:EAST,4:SOUTH,5:WEST\n";
  cin >> choice;

if (choice == 1)
  {
      roomstart(function);
  }
else if (choice == 2)
 {
    roomnorth(function);
 }
else if (choice == 3)
{
   roomeast(function);
}
else if (choice == 4)
{
  roomsouth(function);
}
else if (choice ==5)
{
  roomwest(function);
}
}
Null (957)
It doesn't work because you didn't throw an exception:
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  try
{
   float function;
   int choice;
//----------------------------MAIN START----------------------------------------------

    cout << "Hello and welcome to Lee's' amazing room game \n\n";
    cout <<"There are 6 rooms\n";
    cout<<"START"<<"\n"<<"NORTH"<<"\n"<<"SOUTH"
    <<"\n"<<"EAST"<<"\n"<<"WEST"<<"\n"<<"EXIT"<<"\n";
    cout << "Which door do you wish to enter?\n";
    cout << "press 1:START,2:NORTH,3:EAST,4:SOUTH,5:WEST,6:EXIT\n";
    cin >> choice;

if (choice == 1)
    {
        roomstart(function);
    }
else if (choice == 2)
   {
      roomnorth(function);
   }
else if (choice == 3)
  {
     roomeast(function);
  }
else if (choice == 4)
{
    roomsouth(function);
}
else if (choice ==5)
{
    roomwest(function);
}
else if (choice ==6)
{
    roomexit(function);
}
else throw choice; // invalid choice, throw an exception

}
catch(...)
{
    cout<<"Sorry this is not a correct input answer!\n";
}


http://www.cplusplus.com/doc/tutorial/exceptions/
Last edited on
LEESI (39)
Hey thanks for the reply,ahh right i was wondering why couldnt i just use another 'else if' but i couldnt find any examples at the time,thanks very much for the help :) and the link
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