reading a line from text file

[viknesh316]

// text_read.cpp
// compile with: /clr
#using<system.dll>
using namespace System;
using namespace System::IO;

#include <iostream>

using namespace std;
int main()
{
String^ fileName = "e:\\test.txt";
try
{
//Console::WriteLine("trying to open file {0}...", fileName);
StreamReader^ din = File::OpenText(fileName);

String^ str;
int count = 0;
while ((str = din->ReadLine()) != nullptr)
{
count++;
Console::WriteLine("line {0}: {1}", count, str );
}
}
catch (Exception^ e)
{
if (dynamic_cast<FileNotFoundException^>(e))
Console::WriteLine("file '{0}' not found", fileName);
else
Console::WriteLine("problem reading file '{0}'", fileName);
}


system("pause");
//std::cout << "Paused, press ENTER to continue." << std::endl;
//cin.ignore(1000000);

return 0;

}




with that above code i am able to read from a text file and display the content. But it displays the whole content of the file. Please help me modify the codes so that I can only display one particular line.
Help will really be appreciated

[hypheni]

I didn't check you code, for reading line wise use this code..

char line[100];
ifstream in("file.txt");
while (!in.eof())
{
  in.getline(line, 200, '\n');
}
in.close();

And from next time post simple C/C++ query in C/C++ forum not in VC++ forum..

[vcdebugger]

put a break statement within the while loop after reading one single line.. it will come out after displaying one line..

[viknesh316]

put a break statement within the while loop after reading one single line.. it will come out after displaying one line..

could you please show me how it is done..
thank u

[hypheni]

You dont know how to use 'break' and whats the use of break.

If not, then go and read some C books before posting further.

[Skizmo]

Your code is managed C++, not native C++. Try asking your question here.

[sma]

Is this to do with your previous post regarding the setting of controls using a text file if it is the code I attached to my last response reads the file and retreives the required data just fine.

[hypheni]

Your code is managed C++, not native C++. Try asking your question here.

Oh yes. You are right. I didn't even check those namespace before posting an ans.