C#

Assembly a = Assembly.Load("MyLibrary");
Type t = a.GetType("MyLibrary.MyClass");
object obj = Activator.CreateInstance(t);

using System.IO;

public void FindFiles (string path)
{
  if (Directory.Exists (path))
  {
    DirectoryInfo thisDir = new DirectoryInfo (path);
    FileInfo [] files = thisDir.GetFiles ("*url");
    DirectoryInfo [] subDirs = thisDir.GetDirectories ();

    foreach (FileInfo f in files)
    {
      //Do what you should with the files...
    }

    foreach (DirectoryInfo d in subDirs)
    {
      FindFiles (d.FullName);
    }
  }
}

char a = 65;   // = 'A'
int i = 'A';   // i = 65
int z = 5;
z += a;        // z = 70

#include <stdio.h>
#include <stdlib.h>

void main( void )
{
  char c = 'A';
  char d = '4';
  int i = 0;

  printf( "Character '%c' is %d in ascii.\n", c, c );
  printf( "Character '%c' is %d in ascii.\n", d, d );
  printf( "Character '%c' is %d as an integer.\n", d, atoi( &d ) );
}

Character 'A' is 65 in ascii.
Character '4' is 52 in ascii.
Character '4' is 4 as an integer.