This is not homework. I am just trying to understand my error. :(

[kamikazecopilot]

With this, I produce no errors.

  #include <iostream>

using namespace std;

class exampleClass
{
public:
	void x()
	{
		cout << "This was practice.  Let's make something more complex!\n" << endl;

		system("pause");
	}
};

class stats
{
public:
	int Str()
	{
		cout << "Str: " << endl;
	}
	int Dex()
	{
		cout << "Dex: " << endl;
	}
	int Con()
	{
		cout << "Con: " << endl;
	}
	int Int()
	{
		cout << "Int: " << endl;
	}
	int Wis()
	{
		cout << "Wis: " << endl;
	}
	int Cha()
	{
		cout << "Cha: " << endl;
	}

};

class exampleNumericalClass
{
public:
	int x()
	{
		return 2;
	}
	int z()
	{
		return 5;
	}
};

class character
{
public:
	stats characterStats;
};

int main()
{
	int x;


	exampleClass classPractice;
	classPractice.x();	

	character;

	exampleNumericalClass numericalClassPractice;	
	x=numericalClassPractice.x()+numericalClassPractice.z();

	cout << x << endl;

	system("pause");

	return 0;
}

When I add that I want to call upon the stats within the character class, I get all sorts of problems. Here's what it looks like when I call them:

#include <iostream>

using namespace std;

class exampleClass
{
public:
	void x()
	{
		cout << "This was practice.  Let's make something more complex!\n" << endl;

		system("pause");
	}
};

class stats
{
public:
	int Str()
	{
		cout << "Str: " << endl;
	}
	int Dex()
	{
		cout << "Dex: " << endl;
	}
	int Con()
	{
		cout << "Con: " << endl;
	}
	int Int()
	{
		cout << "Int: " << endl;
	}
	int Wis()
	{
		cout << "Wis: " << endl;
	}
	int Cha()
	{
		cout << "Cha: " << endl;
	}

};

class exampleNumericalClass
{
public:
	int x()
	{
		return 2;
	}
	int z()
	{
		return 5;
	}
};

class character
{
public:
	stats characterStats;

	characterStats.Str();
	characterStats.Dex();
	characterStats.Con();
	characterStats.Int();
	characterStats.Wis();
	characterStats.Cha();
};

int main()
{
	int x;


	exampleClass classPractice;
	classPractice.x();	

	character; I haven't worked this far yet.

	exampleNumericalClass numericalClassPractice;	
	x=numericalClassPractice.x()+numericalClassPractice.z();

	cout << x << endl;

	system("pause");

	return 0;
} 

I get a repeat of error codes:
C2143
C4430
C2228
For all six cases.

Any help with this on WHERE I went wrong would be appreciated. Thanks!

[lsk]

So, I think you have to learn much more about class.
You can use variables and functions in class. I saw you used almost function instead of variables(Don't sure if you intended to do it).

And for the error,

class character
{
public:
	stats characterStats;

	characterStats.Str();
	characterStats.Dex();
	characterStats.Con();
	characterStats.Int();
	characterStats.Wis();
	characterStats.Cha();
};

You can't call function in class structure...
How can I explain it... Just like,

printf("Hi"); // error
int main(){
    ...
}

So, if you want to call function, call it using function.
Maybe,

class character
{
public:
	stats characterStats;
	character(){
		characterStats.Str();
		characterStats.Dex();
		characterStats.Con();
		characterStats.Int();
		characterStats.Wis();
		characterStats.Cha();
	} // We call this a constructor
};

or

class character
{
public:
	stats characterStats;
	void func_name(){
		characterStats.Str();
		characterStats.Dex();
		characterStats.Con();
		characterStats.Int();
		characterStats.Wis();
		characterStats.Cha();
	} // And use this function in main
};

And also, in main.
character; should be character object_name;

Learn more about class,
http://www.cplusplus.com/doc/tutorial/classes/

[giblit]

	characterStats.Str();
	characterStats.Dex();
	characterStats.Con();
	characterStats.Int();
	characterStats.Wis();
	characterStats.Cha();

You need to call it inside of a function not in an arbitrary location.

*edit fixed code tags

[Richard 4234]

Don't worry, you're allowed to ask about homework here, we have to admit we all do (unless you don't have homework) ask about homework.