[zanyterp]

probably a stupid question, but i am curious about the answer and thought i would ask . . . in C++ when i declare an array of objects (or try to declare multiple instances not in an array) of a type i define and use a constructor in my class, i get an error saying no appropriate constructor (or something to that effet). i can fix that problem by inserting an empty constructor. is there something i am doing wrong? a made up example:

Code:
class MyClass{
private:
...
public:
MyClass(char value[], int numValue);
MyClass();
};
//declare my class and all that goes with it

MyClass::MyClass(char value[]="", int numValue=0)
{
insert code here to do stuff
}
//constructor that sets data fields

MyClass::MyClass()
{
}
//empty constructor

int main(argc, const * char argv[]) /*sorry if i have the parameters wrong, i am trying to do this from memory*/
{
MyClass myClassObjects[5];
return 0;
}

without the empty constructor that has nothing in it, i get the afore mentioned error. is there something wrong with my code? or is that just the way it works? thanks!!

[ideasculptor]

Originally posted by zanyterp:
probably a stupid question, but i am curious about the answer and thought i would ask . . . in C++ when i declare an array of objects (or try to declare multiple instances not in an array) of a type i define and use a constructor in my class, i get an error saying no appropriate constructor (or something to that effet). i can fix that problem by inserting an empty constructor. is there something i am doing wrong? a made up example:

Code:
class MyClass{
private:
...
public:
MyClass(char value[], int numValue);
MyClass();
};
//declare my class and all that goes with it

MyClass::MyClass(char value[]="", int numValue=0)
{
insert code here to do stuff
}
//constructor that sets data fields

MyClass::MyClass()
{
}
//empty constructor

int main(argc, const * char argv[]) /*sorry if i have the parameters wrong, i am trying to do this from memory*/
{
MyClass myClassObjects[5];
return 0;
}

without the empty constructor that has nothing in it, i get the afore mentioned error. is there something wrong with my code? or is that just the way it works? thanks!!

It works fine for me. Sp long as you have a constructor which can be called with no parameters, it should work fine. I cut and pasted your code (and removed the default constructor declaration and definition) and it compiled and ran, once I corrected the syntax errors.

The following compiled with no errors:

Code:
class MyClass{
private:
public:
MyClass(char value[], int numValue);
};
//declare my class and all that goes with it

MyClass::MyClass(char value[]="", int numValue=0)
{
//insert code here to do stuff
}
//constructor that sets data fields

int main(int argc, const char *argv[]) /*sorry if i have the parameters wrong, i am trying to do this from memory*/
{
MyClass myClassObjects[5];
return 0;
}

--sam

[zanyterp]

Originally posted by ideasculptor:
It works fine for me. Sp long as you have a constructor which can be called with no parameters, it should work fine. I cut and pasted your code (and removed the default constructor declaration and definition) and it compiled and ran, once I corrected the syntax errors.

The following compiled with no errors:

Code:
class MyClass{
private:
public:
MyClass(char value[], int numValue);
};
//declare my class and all that goes with it

MyClass::MyClass(char value[]="", int numValue=0)
{
//insert code here to do stuff
}
//constructor that sets data fields

int main(int argc, const char *argv[]) /*sorry if i have the parameters wrong, i am trying to do this from memory*/
{
MyClass myClassObjects[5];
return 0;
}

--sam

hmmmm. . .i will have to re-check it then. see if i had something different in my example (or it could just be the compiler i use at school, but i thought i had had the same problem at home with xcode) . . . thanks! other than the wrong main(), what else did i miss?

[ideasculptor]

your arguments to the main functions were incorrect.

--sam

[zanyterp]

Originally posted by ideasculptor:
your arguments to the main functions were incorrect.

--sam

this part?

int main(int argc, const char *argv[])

thanks!
nick