C++ homework help - please!

[RGN]

Can i do this? it does not seem to work....


class EmployData
{
private:

getData();
getFile();
//closeFile(); //not created yet
ifstream in_file; //function header?
char Data[546]; // create an array for data from file
public: //temporary so this compiles
void showData(void);
};

EmployData::getFile()
{
in_file.open("SEmploy.txt"
cout << &quot;in getFile&quot; << endl;

if (in_file.fail())
{
cout << &quot;the file failed to OPEN please check the file
and try again. &quot; << endl;

exit(1);
}
}


EmployData::getData()
{
//ifstream SEmploy.txt;

//char Data[546];

in_file.get(Data, 546);


char strNum[6], fstName[50], lstName[50];
const char toksep[] = &quot; \n&quot;;
int nNum;
char *ptr;

cout << &quot;in getData&quot; << endl;

ptr = strtok(Data, toksep);
strcpy(strNum, ptr);
nNum = atoi(strNum);
ptr = strtok(NULL, toksep);
strcpy(lstName, toksep);
ptr = strtok(NULL, toksep);
strcpy(fstName, toksep);
}

void EmployData::showData(void)
{
cout << Data[2] << endl;

}



I'm really only concerned as to why I can't seem to get the file open...

 

[RGN]

ok, I figued it out... kinda of I'm having some trouble with that string function now...

 

[RGN]

anyone, its just the string stuff now...

 

[MC]

are you actually getting any syntex error?

where is your main function?

 

[RGN]

Ming:
Here is my main, its in a *.cpp file.

#include <iomanip.h>
#include <iostream.h>
#include <conio.h>
#include <fstream.h>
#include <stdlib.h>
#include <string.h>
#include &quot;proj2.h&quot;

void main()
{
EmployData a;
a.getFile();
a.getData();
a.showData();
cout << &quot;hello&quot; << endl;
getch();

//return 0;
}


it compiles and even runs but the problem lies in this section of code:

EmployData::getData()
{
//ifstream SEmploy.txt;

//char Data[546];

in_file.get(Data, 546);


char strNum[6], fstName[50], lstName[50];
const char toksep[] = &quot; \n&quot;;
int nNum;
char *ptr;

cout << &quot;in getData&quot; << endl;

ptr = strtok(Data, toksep);
strcpy(strNum, ptr);
nNum = atoi(strNum);
ptr = strtok(NULL, toksep);
strcpy(lstName, toksep);
ptr = strtok(NULL, toksep);
strcpy(fstName, toksep);
}

------

strNum and fstName, lstName arrays are not getting populated... and so the rest doesn't work...

 

[MC]

well, your code seems ok to me but

this ---> in_file.get(Data, 546);

confuses me!

what is the 546 doing there??

 

[RGN]

well, I toughtit would read 546 characters from the file that was opened to store in the Data array... no?

I then wanted to pull from the Data array into the str arrays

 

[MC]

no......

the .get() will only read ONE character at a time!

 

[RGN]

well, how do I read the WHOLE file?

 

[MC]

depends of what kind of file do you have assuming you know that.

If it's just a line of data....then use fin.getline(Data,546) this will read until the &quot;/n&quot; or up to 546.

you can also use >> to read the data but it will SKIP the SPACE and LINE BREAK

 

[RGN]

Actually it reads the whole line, BUT only that line...

which looks like this BTW, 57915 Calahan Harry

 

[MC]

then the .getline(Data,546) should solve your problem.

 

[ckluu]

or you could try .read(data, 546);
hope it works...good luck

 

[RGN]

hmm, this project is SUCKING!!!!