Forbids Declaration with No Type

I'm having a problem with these functions...

Code:

#include <iomanip.h>
#include <stdlib.h>

Dep(float Bal, float Amount)
     { Bal=Bal+Amount;
       return 0;}

Check(float Bal, float Amount)
     { Bal=Bal-Amount;
       return 0;}

Charge(float Bal, float Amount)
     { Bal=Bal-Amount;
       return 0;}

Withdraw(float Bal, float Amount)
     { Bal=Bal-Amount;
       return 0;}


main()
 {  float Bal, Amount; char Comm;


    cout<<"\n BALANCING CHECKBOOK PROGRAM ";
    cout<<"\n --------------------------- ";
    cout<<"\n\n Christian Aziz' Account ";
    cout<<"\n Enter Starting Balance : "; cin>>Bal;
    cout<<"\n Command Options: "
        <<"\n d- deposit"
        <<"\n c- check "
        <<"\n s- service charge "
        <<"\n w- withdrawal "
        <<"\n x- exit "<<endl;
    cout<<"\n Enter command: "; cin>>Comm;
    cout<<"\n Enter amount in dollars and cents: "; cin>>Amount;
     while(Comm)
       {
              if(Comm == 'd')
              {Dep(Bal, Amount);}
         else if(Comm == 'c')
              {Check(Bal,Amount);}
         else if(Comm == 's')
              {Charge(Bal,Amount);}
         else if(Comm == 'w')
              {Withdraw(Bal,Amount);}
         else if(Comm == 'x')
              {cout<<"\n Your New Balance is: $"<<Bal; break;}
         else
              {continue;}
         cout<<"\n Enter another command: "; cin>>Comm;
         cout<<"\n Enter amount in dollars and cents: "; cin>>Amount;

       }

      system("PAUSE");
      return 0;
}

...I get 4 errors
ANSI C++ forbids declaration 'Dep' with no type
ANSI C++ forbids declaration 'Check' with no type
ANSI C++ forbids declaration 'Charge' with no type
ANSI C++ forbids declaration 'Withdrawal' with no type

What am I doing wrong??

You need to declare the return type of those functions. In the case you are showing, you would precede the function names with int.

int withdrawl(params)
{code};

I'm not sure I understand..do I do that in the Function Header or the Function Call Statement?

When you declare and define your functions, you specify a return type. When you actually call the function all you need to do is write the name of the function and the parameters that you want to pass to it.

-Prelude

excuse my ignorance, but I've been working on this for almost the whole day (whether i should have or not), my eyes are blurry, and I'm frustrated..Exactly how would I implement this return type into the program so I get SUCCESS when compiled?

Code:

#include <iostream>
using namespace std;

int function ( int i )
{
  return i * 2;
}

int main ( void )
{
  int data = 10, ret;
  ret = function ( data );
  cout<< ret <<endl;
  return EXIT_SUCCESS;
}

-Prelude

AHHH ::smacks himself on the forehead:: Once again, Prelude..thanks a lot!!