c++ help with class(new to classes) Post: 302595743

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Top Forums Programming c++ help with class(new to classes) Post 302595743 by KingAroan on Saturday 4th of February 2012 03:11:46 PM

02-04-2012

Registered User

c++ help with class(new to classes)

Hello there, I am new to using classes, and have been having so many problems. I don't want to go to my teacher if I don't have to, because it is always my luck that it is something easy that I just overlooked somehow. I have been working on this for 3 days and I can't get it to read from a file.

Here is my header file:

Code:

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

ifstream fin;

class cMonthlyRainfall
{
    private:
        float   *rainfall,
                *hi_temp,
                *lo_temp,
                *average_temp;

    public:
        cMonthlyRainfall ();
        ~cMonthlyRainfall();
        void    set_values (cMonthlyRainfall &month, ifstream &fin);
};

Here is the cpp file attached to the header file:

Code:

#include <iostream>
#include "cMonthlyRainfall.h"

cMonthlyRainfall::cMonthlyRainfall()
{

}

void cMonthlyRainfall::set_values (cMonthlyRainfall &month, ifstream &fin)
{
    int i;

    for (i = 0; i < 12; i++)
    {
        fin >> month[i].rainfall;
        fin >> month[i].hi_temp;
        fin >> month[i].lo_temp;

        month[i].average_temp = (month[i].hi_temp + month[i].lo_temp) / 2;
    }       //End for loop
}       //End function set_values()

The errors that I am receiving are attached to that cpp file and the error codes are:

Code:

C:\Users\KingAroan\Desktop\CodeBlocks\Rainfall\cMonthlyRainfall.cpp||In member function 'void cMonthlyRainfall::set_values(cMonthlyRainfall&, std::ifstream&)':|
C:\Users\KingAroan\Desktop\CodeBlocks\Rainfall\cMonthlyRainfall.cpp|23|error: no match for 'operator[]' in 'month[i]'|
C:\Users\KingAroan\Desktop\CodeBlocks\Rainfall\cMonthlyRainfall.cpp|24|error: no match for 'operator[]' in 'month[i]'|
C:\Users\KingAroan\Desktop\CodeBlocks\Rainfall\cMonthlyRainfall.cpp|25|error: no match for 'operator[]' in 'month[i]'|
C:\Users\KingAroan\Desktop\CodeBlocks\Rainfall\cMonthlyRainfall.cpp|27|error: no match for 'operator[]' in 'month[i]'|
C:\Users\KingAroan\Desktop\CodeBlocks\Rainfall\cMonthlyRainfall.cpp|27|error: no match for 'operator[]' in 'month[i]'|
C:\Users\KingAroan\Desktop\CodeBlocks\Rainfall\cMonthlyRainfall.cpp|27|error: no match for 'operator[]' in 'month[i]'|
||=== Build finished: 6 errors, 0 warnings ===|

And finally here is my main.cpp file:

Code:

#include <iostream>
#include <fstream>
#include <iomanip>
#include "cMonthlyRainfall.h"
using namespace std;

int main()
{
    ifstream fin;
    int count;
    cMonthlyRainfall    month[12];   //Creates an object for each month

    fin.open ("weather.dat");

    if (!fin)
    {
        cout << "ERROR: Unable to find weather.dat";
        return 1;
    }

    cMonthlyRainfall::set_values(month, fin)

    return 0;
}

I am sure the errors are connected to the array but I am not sure since I haven't worked with a class before. I have been googling and reading the book but I can't figure it out. Thanks for any help.

KingAroan

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