Reading lines from a file.

[Michael_Bray]

Hi,

I wrote a function where I want to read 2 lines from a file. Each line will be soimething like

A + B - C
A - B + A - D - F

etc

I wrote a function as follows:


void GetData(string& Infix, string& Pre)
{
ifstream ins;
ins.open("data.txt");
char buffer[80];

int Count = 0; // Counter used to update position in array where we are saving the floppies contents to.

string data;
string FloppyData[2];

while(!ins.eof()){
getline(ins,data);
FloppyData[Count] = data;
Count++;
}

Infix = FloppyData[0];
Pre = FloppyData[1];

}


I can't see whats wrong with it. I want the FloppyData array to hold two strings, then assign Infix and Pre to the right values in the array.

Thanks in advance for any feedback.

[ChrisWise]

All I did to get your code working is specified an absolute path to the file




#include "iostream"
#include "string"
#include "fstream"


using namespace std;

void GetData(string& Infix, string& Pre)
{

ifstream ins("c:\\data.txt");


int Count = 0; // Counter used to update position in array where we are saving the floppies contents to.

string data;
string FloppyData[2];

while(!ins.eof()){
getline(ins,data);
FloppyData[Count] = data;
Count++;
}

Infix = FloppyData[0];
Pre = FloppyData[1];

}


int main()
{
string i,p;

GetData(i,p);

cout << i << endl;
cout << p;

system("Pause");

return 0;

}

[Michael_Bray]

:( I can compile that, but when I try to run it comes up with a pop up message saying - btw, I wouldn't have a clue where the created error log is.

Program Error

file.exe has generated errors and will be closed by Windows.

An error log is being created.