catch block giving parse error

[Mr_roboto]

I can not seem to get my try/catch block to work.

I am trying to use it in a templated class and I keep getting parse errors.

Is my syntax correct?

I have also tried

template<class T>
catch(Test<T>::whoops)  // <--- This is giving me a parse error
{ cout<< " it works " << endl << endl;
    system("pause");
}

Which also gives me parse errors.

Any pointers would be appreciated.

#include <iostream>
#include <iomanip>
#include <string>

using namespace std;
template<class T>
class Test
{ private:
    T balance;
  public:
    class whoops {};
   void withdraw(float temp);
   void see();
   void SetBalance();
};

int main()
{ Test<float> data[10];
  float try_;
  int exit = 0;
  char select = '\0';

  data[0].SetBalance();

  do
   { cout<< "(1/2) ->: ";
     cin>> select;

       switch(select)
        { case '1':
             cout<< "hmm: ";
             cin>> try_;

             try
              { data[0].withdraw(try_);
              }

              catch(Test::whoops)  // <--- This is giving me a parse error
                { cout<< " it works " << endl << endl;
                  system("pause");
                }
              break;

         case '2':
                 data[0].see();
            break;
          default:
          cout<< "try again" << endl << endl;
           break;
      }
   }while(exit == 0);
      return 0;
}
template<class T>
void Test<T>::withdraw(float temp)
{   cout<< balance << endl;

  if(temp>balance)
    throw whoops();
    balance-=temp;
}
template<class T>
void TestTT>::SetBalance()
{ balance = 100;
}

template<class T>
void Test<T>::see()
{ cout<< balance;

}

Thank you,

Rich

[7stud]

Nowhere in your code have you defined a class called Test, so Test::whoops doesn't exist.

[Mr_roboto]

I thought that I defined it here. If I untemplate the class it works.

 
using namespace std;
template<class T>
class Test   // <<-- I thoght that I declared the class "TEST" here
{ private:
    T balance;
  public:
    class whoops {};
   void withdraw(float temp);
   void see();
   void SetBalance();
};

[7stud]

class Test // <<-- I thoght that I declared the class "TEST" here

No, you only have a recipe for making classes called:

template<class T>
class Test

After you use that recipe to make a class, you will have a class called "Test for floats" or "Test for ints", etc., but you will never have a class called just "Test". For there to be a class called just "Test", you would have to have this declaration in your code:

class Test
{

};

That is not the same as:

template<class T>
class Test 
{

};

Putting that template in your program does not create a class. It's only after you issue the commands to the compiler to use that recipe to create a class that there will be an actual class in your code. Thereafter, you have to refer to the class by its correct name, e.g. "Test for floats".

[agarwaga]

the change mentioned below should solve ur problem

catch(Test<float>::whoops)  // <--- This is giving me a parse error

[agarwaga]

also change

template<class T>
void TestTT>::SetBalance()
{ balance = 100;
}

to

template<class T>
void Test<T>::SetBalance()
{ balance = 100;
}