#pragma once
#include"Include.h" //Here I have #include<vector>, using namespace std,
//#include "schClass"
class schClass;
class school
{
public:
//other methods
void addClass(class schClass& newClass);
void test(void){ cout << section[0].year() << section[0].section(); } //C2027 & C2228
private:
//other methods
vector<class schClass> section;
};
1 2 3 4
Error 1 error C2027: use of undefined type 'schClass'
Error 2 error C2228: left of '.year' must have class/struct/union
Error 3 error C2228: left of '.section' must have class/struct/union
Line 11: remove the keyword class. The compiler already knows from line 5 that schClass is a class.
Line 15: schClass must be fully declared to use as a type in a std::vector. Again, remove the keyword class.
Be sure to include schClass.h before your include of school.h The forward declaration at line 5 should not be needed if your includes are in the proper order.
Since you didn't post schclass.h, can;t tell if line 12 is correct or not.