using System;
using System.IO;
class WriteToFile {
public static void Main(string[] args) {
FileStream fout;
try {
fout = new FileStream("test.txt", FileMode.Create);
} catch(IOException exc) {
Console.WriteLine(exc.Message + "\nError Opening Output File");
return;
}
// Write the alphabet to the file.
try {
for(char c = 'A'; c <= 'Z'; c++)
fout.WriteByte((byte) c);
} catch(IOException exc) {
Console.WriteLine(exc.Message + "File Error");
}
fout.Close();
}
}