Trouble with lesson 10 (File I/O)

[sirconnorstack]

I copied and pasted the code, so I know there aren't any typos. I made sure the file name was correct, but the program just spits random, unreadable characters at me. Any ideas?

#include <fstream>
#include <iostream>

using namespace std;

int main()
{
  char str[10];

  //Creates an instance of ofstream, and opens example.txt
  ofstream a_file ( "F:\test.txt" );
  // Outputs to example.txt through a_file
  a_file<<"This text will now be inside of example.txt";
  // Close the file stream explicitly
  a_file.close();
  //Opens for reading the file
  ifstream b_file ( "F:\test.txt" );
  //Reads one string from the file
  b_file>> str;
  //Should output 'this'
  cout<< str <<"\n";
  cin.get();    // wait for a keypress
  // b_file is closed implicitly here
}

[matsp]

Possibly the problem is: whenever you put a \ in a quote, you need to double up to \\, as a single \ in C or C++ code means "treat the next character as a special character". In this case, the \t becomes a tab, and that's not a valid file-name. Since the filename is invalid, it doesn't actually open the file, and you can't write to an unopened file, nor can you read anything from it. So when you try to read back the string, it doesn't, and the uninitialized value of the string is displayed.

--
Mats

[sirconnorstack]

Thanks! It works out fine now.