Using command line arguments in VS2010

using command line arguments in VS2010Time 2014-07-11 22:20:39 csdn blog Original http://blog.csdn.net/u010839382/article/details/37704553 theme Visual Studio IOS

Programming in Linux is accustomed to using command-line parameters, so the use of VS2010 also tried.

New project, C + + writing program is as follows:

#include <iostream>
#include <fstream>
using namespace std;

int main (int argc,char*argv[])
{
  ifstream fin (argv[1],ios::in);//Input mode open file
  //ifstream fin;fin.open (argv [1],ios::in);
  Ofstream Fout (Argv[2],ios::out|ios::app);//output, append mode open file
  //ofstream fout;fout.open (argv[2],ios::out|ios::app);
  int C;
  while (!fin.eof ())//To determine whether the end of the file
  {
    c=fin.get ();//character
    fout.put (c);//write characters
  }
  fin.close ();// Close file
  fout.close ();
  return 0;
}

In order to implement the command line parameter argv[] in your program, you need to set the properties of the project.

Project-> Properties-> debug-> command parameters, enter A.txt b.txt

Also, for ease of testing, set the working directory to the desktop.

Project-> Property-> Debug-> working directory, set to desktop

You can compile the execution program.

The applet implements a copy of the file. namely A.txt-->b.txt