C++ Debugging console app - c++

Question

I'm working on a debugging console app for school, and I get an error when compiling the program.
//DEBUG9-4
//This program creates Student objects
//and overloads < to compare student year in school
#include<iostream>
#include<string>
using namespace std;
class Student
{
private: //MISSING :
int stuID;
int year;
double gpa;
public:
Student(const int i, const int y, const double g); // NO VARIABLES DECLARED HERE
void showYear(); //MISSING THE CURLY BRACES
bool operator < (const Student);
};
Student::Student(const int i, const int y, const double g) // VARIABLES WERE NOT MATCHING
{
stuID = i;
year = i;
gpa = g; // VARIABLE g WAS POST TO BE THE "gpa" VARIABLE
}
void Student::showYear()
{
cout << year;
}
int Student::operator < (const Student otherStu)
{
bool less = false;
if (year < otherStu.year)
less = true;
return less;
}
int main()
{
Student a(111, 2, 3.50), b(222, 1, 3.00);
if(a < b)
{
a.showYear();
cout << " is less than ";
b.showYear();
}
else
{
a.showYear();
cout << " is not less than ";
b.showYear();
}
cout << endl;
return 0;
}
Line: 28 Error: prototype for 'int Student::operator < (const Student& otherStu)' dose not match any in class Students.
Line: 16 Error: candidate is: bool Student::operator<(Student).

Answer 1

You wanted to implement it like this:
bool Student::operator < (const Student otherStu)
{
bool less = false;
if (year < otherStu.year)
less = true;
return less;
}
Because now your definition and declaration doesnt match, thay have different return value.
or you can doi just:
bool Student::operator < (const Student b)
{
return year < b.year ? true : false;
}