please help

[cmoney12051]

I am trying to firgure a way to store test scores to a arr or something so i can sotre 20 different scores and twenty different possible points values. but i cant seem to get it right i have almost everything done acept storeing the vales so i can recall them later in my for staement. please help. it also uses a class for the student names and id numbers, maybe i need to put the test score and possible test score in the class i sont know? that is why i am asking for your help. if i do need to make any changes please show me how to do them it took me about a week to get this far. so i need as much assistance as i can get. please help. thanks.

P.S. i have also uploaded the .cpp file as an attachment for convinience.

#include <iostream>
#include <string>
using namespace std;

class Student
{
private:
	string firstName;
	string lastName;
	int idNum;
	
public:
	void setID(int id);
	void setName(string fn, string ln);
	void printID();
	void printName();

	Student(); // constructor
	Student(string, string, int); // constructor
};
Student::Student()
{
	idNum = 9999;
}

Student::Student(string fn, string ln, int id)
{
	firstName = fn;
	lastName = ln;
	idNum = id;
}

void Student::setID(int id)
{
	idNum = id;
}

void Student::setName(string fn, string ln)
{
	firstName = fn;
	lastName = ln;
}

void Student::printID()
{
	cout << "Student ID: " << idNum << endl;
}

void Student::printName()
{
	cout << "Name: " << firstName << " " << lastName << endl;
}

void main()
{
	Student students[20];
	string first, last;
	int id;
	int poss;
	int test;
	

		
	cout << "Eneter student information as first name, last name, id seperated with spaces \n "<<endl;
	cout << "(Example: John Doe 1212) "<<endl;
	for(int i=0; i<2; ++i)
	{
		
		cout << "Student : "<< endl;
		cin >> first>>last>>id;
		cout << "Enter Test Score" << endl;
		cin >> test;
		cout << "Enter possible points: "<<endl;
		cin >> poss;
		
				
		students[i] = Student(first, last, id);
	}
	for (int i=0; i<2; ++i)
	{
		cout << endl;
		students[i].printID();
		students[i].printName();
		cout << "This student earned "<<test<<" out of "<<poss<<". Letter grade is"<<endl;

	}
	
}

[Ancient Dragon]

line 77: you can't call a constructor after instantiating the class objest (line 56). After that you must call the set functions.

students[i].setName(FirstName, LastName);
students[i].setID(id);

Make the score and point values part of the class so that you can easily match them up with the student.

[cmoney12051]

and how do "Make the score and point values part of the class so that you can easily match them up with the student. "? remeber it took me a week to get this far, i had a hard enough time with creating the first class.

[Ancient Dragon]

Simple:

class Student
{
private:
	string firstName;
	string lastName;
	int idNum;
   int score;
   int pointes;

	
public:
<snip>

[cmoney12051]

but how do i use that to call the test scores later and display them in the for loop thing? and alo how would i stop the for loop if i ran out of names before i got to twenty? i know i need a while loop but dont know how to make one? and thanks for all your help so far

[Ancient Dragon]

>>but how do i use that to call the test scores later and display them in the for loop thing?
Just like you did with the other class variables

for(int i = 0; i < number_class_objects; i++)
{
    cout << students[i].grades;
}

>>and alo how would i stop the for loop if i ran out of names before i got to twenty?
There are lots of ways to do that. One way is to ask the question at the end of the loop.

for(int i = 0; i < maxStudents; i++)
{
   <snip>
   char answer;
   cout << "Enter another student info (y or n) ?\n";
   cin >> answer;
   if(answer == 'N' || answer == 'n')
       break;
}

[cmoney12051]

what dose <snip> mean and sorry but i also ment to ask how do i input in the test scores and points?

[Ancient Dragon]

>>what dose <snip> mean
It just means I left out code, like snipping with a pair of sizzers.

>>how do i input in the test scores and points?
Just like you did all the others. Look to see what you already did and you will have the answer.

[cmoney12051]

Great Thanks! ur the best!