Please Help! not sure why these errors are occurring

Hi again everybody,

I am having a bit of trouble in getting this script to work properly. Two error messages are coming up when I compile this code. They are as follow:

1) Error 1 error C2664: 'fillArray' : cannot convert parameter 3 from 'int [50]' to 'int &' f:\My Documents\Visual Studio 2005\Projects\Final Using Arrays\Final Using Arrays\Final Using arrays.cpp 49


2) Error 2 error C2440: '=' : cannot convert from 'std::string' to 'char' f:\My Documents\Visual Studio 2005\Projects\Final Using Arrays\Final Using Arrays\Final Using arrays.cpp 168


The problem is occurring when I am trying to store a name (which is gotten inside of the function "fillArray", inside of an Array which is located inside ofthe main function. I am sure it is a coding error (it usually is with me) and I really appreciate the help, this is only my first semester of study in the C++ language. Anyway here is the code. The Error are on line 49 and 168 Respectively. (They are labeled)

Code:

#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>

using namespace std;




void calculateAverage(int test1,int test2,int test3,int test4,int test5, int& student_average);
char calculateGrade(int& student_average);
int student_counter(ifstream& input2, int& student_count);
void fillArray (ifstream& input3, int student_count, int& grades, int& student_name);

int main()
{
string studentName;
int test1,test2,test3,test4,test5;
char grade = ' ';
int student_average = 0;
int student_count = 0;
double class_average = 0;
int class_total = 0;
int grades[50];
string student_name[10];
int counter;

ifstream infile;//input file stream variable
ifstream infile2;
ofstream outfile;   //output file stream variable

infile.open("studentgrades.txt");  //open input file
infile2.open("studentgrades2.txt");  //open input file
outfile.open("results.out");   //open output file





//Print the Heading of the output file!
outfile << "Student" << setw(15) << "Test1" << setw(10) << "Test2" << setw(10) << 
		"Test 3" << setw(10) << "Test 4" << setw(10) << "Test 5" << setw(10) << 
		"Average" << setw(10) << "Grade" << setw(10) << endl;

student_counter(infile2,student_count);
cout << student_count << endl;

fillArray (infile, student_count, grades, student_name);  //line 49
cout << student_name[0] << endl;

//While there is still data to be read in the input file do the following:
//for (counter = 0; counter <= student_count; counter++)
//{
//infile >> studentName >> test1 >> test2 >> test3 >> test4 >> test5;
//calculateAverage(test1,test2,test3,test4,test5,student_average);


//if (studentName == "end") 
//{
//	break;
//}
//output the information to the output file
//outfile << setw(6) << studentName << setw(15) << test1 << setw(10) << test2 << setw(10) << 
	//	test3 << setw(10) << test4  << setw(10) << test5 << setw(10) << 
	//	student_average << setw(10) << calculateGrade(student_average) << setw(10) << endl;

//class_total = class_total + student_average;

//}


//class_average = class_total/student_count;


//Print Final stats to the output file
//outfile << endl;
//outfile << setw(20) << "Total Number of Students = " << student_count << 
 //setw(20) << "Class Average = " << class_average << endl;

infile.close();
outfile.close();
return 0;
}


int student_counter(ifstream& input2, int& student_count)
{
string studentName;
int test1,test2,test3,test4,test5;

//While there is still data to be read in the input file do the following:
while (input2)
{
input2 >> studentName >> test1 >> test2 >> test3 >> test4 >> test5;

if (studentName == "end") 
{
	return student_count;
}

student_count++;

}


}

void calculateAverage(int test1,int test2,int test3,int test4,int test5, int& student_average)
{
 
	student_average = ((test1+test2+test3+test4+test5))/5;


}


char calculateGrade(int& student_average)
{
char grade;

	
switch((student_average) / 10)
{

case 10:
case 9:
	grade = 'a';
	return grade;

case 8:
	grade = 'b';
	return grade;

case 7:
	grade = 'c';
	return grade;

case 6:
	grade = 'd';
	return grade;

default: 
	grade = 'f';
	return grade;

}


}

void fillArray (ifstream& input3, int student_count, int& grades, string& student_name)
{
string studentName;
int test1,test2,test3,test4,test5;
int counter = 0;
int name_counter = 0;
int grade_counter = 0;
int name_number = 0;
//While there is still data to be read in the input file do the following:
for (counter = 0; counter <= student_count; counter++)
{
input3 >> studentName >> test1 >> test2 >> test3 >> test4 >> test5;

for (name_counter = 0; name_counter < 1; name_counter++)
{
	 name_number++;
	 student_name[name_number] = studentName ; // line 168

}

if (studentName == "end") 
{
	break;
}


}


}

On line 49, grade isn't an integer, it's the name of an array, which is more like a pointer. If you want to pass an integer, you have to provide an index, if you want to pass the array. Change your function parameter from int& to int [].

As for 168, since you're passing a reference to the array, rather than passing the full array, you now have a single string in the function, when you use indexes on that string you're now refering to a single character in the string. Again, you're gonna want to change your string& to string [].

Thank you so much for the advice, and I really do appreciate the help. I will let you know how it turns out!


Thanks,
Jeff Gross