Reading data under Linux

Originally Posted by paultawk

I have written a prog to read data from files but it only works under windows.
Can anyone tell me how to read data under Linux?

I would need somehting similar to the following windows code, but that works under Linux:

#include <iostream>
using std::cerr;
using std::cout;
using std::endl;
#include <fstream>
using std::ifstream;
#include <cstdlib> // for exit function
// This program reads values from the file 'example.dat'
// and echoes them to the display until a negative value
// is read.
int main()
{
ifstream indata; // indata is like cin
int num; // variable for input value
indata.open("example.dat"); // opens the file
if(!indata) { // file couldn't be opened
cerr << "Error: file could not be opened" << endl;
exit(1);
}
indata >> num;
while ( !indata.eof() ) { // keep reading until end-of-file
cout << "The next number is " << num << endl;
indata >> num; // sets EOF flag if no value found
}
indata.close();
cout << "End-of-file reached.." << endl;
return 0;
}

best regards

Originally Posted by paultawk

we i'm using the g++ compiler, and the problem is that it wasnt able to locate the headers such as iostream and ifstream. Any ideas?

Originally Posted by paultawk

for compilation i used the following, is it wrong?

g++ -Wall -D__LINUX_OSS__ -o filename filename.cpp