How to use conversion operator in C++

Conversion operators are can be used when where you want to use your object in place of some another datatype ....

For example ....

If we have a class called TestClass like

class TestClass
{
  bool m_bTestMember;
public:
TestClass()
{
   m_bTestMember= false;
}
SetTestMember( bool i_bSet )
{
m_bTestMember=i_bSet;
}

} 




int main()
{
  TestClass test;
  if (test)  //You cannot use this object here, as IF expects some boolean(or integer) stuff
  {
    printf("Hurray");
  }
  else
  {
    printf("BadLuck");
  }

}

Hence to able to use test in if condition you will need to add conversion operator in your class...like follwoing one

class TestClass
{
  bool m_bTestMember;
public:
TestClass()
{
   m_bTestMember= false;
}
SetTestMember( bool i_bSet )
{
m_bTestMember=i_bSet;
}

//Conversion opoerator for bool
operator bool()
{
  return m_bTestMember;
}

}

Now you can use object of this class in IF condition.