C / C++ / MFC

static void runCommand() {
    //* Create your Process
    Process process = new Process();
    process.StartInfo.FileName = "cmd.exe";
    process.StartInfo.Arguments = "/c yourfile.exe";
    process.StartInfo.UseShellExecute = false;
    process.StartInfo.RedirectStandardOutput = true;
    process.StartInfo.RedirectStandardError = true;
    //* Set your output and error (asynchronous) handlers
    process.OutputDataReceived += new DataReceivedEventHandler(OutputHandler);
    process.ErrorDataReceived += new DataReceivedEventHandler(OutputHandler);
    //* Start process and handlers
    process.Start();
    process.BeginOutputReadLine();
    process.BeginErrorReadLine();
    process.WaitForExit();
}
static void OutputHandler(object sendingProcess, DataReceivedEventArgs outLine) {
    //* Do your stuff with the output (write to console/log/StringBuilder)
    Console.WriteLine(outLine.Data);
}

public partial class MainWindow : Window
{
    Process process = new Process();

    public MainWindow()
    {
        InitializeComponent();
        runCommand();
    }

    private void button_Click(object sender, RoutedEventArgs e)
    {
        textBox.Text += "test\r\n";
        process.StandardInput.Write('e');
    }

    void runCommand()
    {
        //* Create your Process

        process.StartInfo.FileName = "c:\\ConsoleApp.exe";
        process.StartInfo.Arguments = ".";
        process.StartInfo.UseShellExecute = false;
        process.StartInfo.RedirectStandardOutput = true;
        process.StartInfo.RedirectStandardError = true;
        process.StartInfo.RedirectStandardInput = true;
        //* Set your output and error (asynchronous) handlers
        process.OutputDataReceived += new DataReceivedEventHandler(OutputHandler);
        process.ErrorDataReceived += new DataReceivedEventHandler(OutputHandler);

        //* Start process and handlers
        process.Start();
        process.BeginOutputReadLine();
        process.BeginErrorReadLine();
        //            process.WaitForExit();
    }
    void OutputHandler(object sendingProcess, DataReceivedEventArgs outLine)
    {
        //* Do your stuff with the output (write to console/log/StringBuilder)
        Console.WriteLine(outLine);
    }
}

using System.Threading;
new Thread(() => 
{
    Thread.CurrentThread.IsBackground = true; 
    runCommand();
}).Start();

MyApp.exe -Iinput.txt -Ooutput.txt

setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);

void getdis()
...
p.getdis(a,b);

#include<stdio.h>
struct point
{
  int x,y;
  void (*pfun)(struct point *pp);
};

void getdis(struct point *pp)
{
  printf("%d\n", (pp->x + pp->y));
}

int main()
{
  struct point p;
  p.x = 5; p.y = 10;
  p.pfun = getdis;

  p.pfun(&p);

  getchar();
  return 0;
}

Quote:

In addition, the stack_size argument can be 0, in which case the operating system uses the same value as the stack that's specified for the main thread.

ForNow wrote:

I guess it could be ...