![]() To avoid such a situation and to produce robust code, you should use the KeyAvailable property and ReadKey method and store the read characters in a pre-allocated buffer. If the initial position within the stream is unknown or the stream does not support seeking, the underlying Stream also needs to be reinitialized. Since the position of the reader in the stream cannot be changed, the characters already read are unrecoverable, and can be accessed only by reinitializing the TextReader. If this method throws an OutOfMemoryException exception, the reader's position in the underlying Stream object is advanced by the number of characters the method was able to read, but the characters already read into the internal ReadLine buffer are discarded. I only after the read operation has completed. Printfn "About to call Console.ReadLine in a loop." Printfn "This example requires that input be redirected from a file." About to call Console.ReadLine in a loop. The example displays the following output: StreamWriter^ standardOutput = gcnew StreamWriter( Console::OpenStandardOutput() ) Ĭonsole::WriteLine( "INSERTTABS has completed the processing of ", ctr, s) Recover the standard output stream so that a String^ newLine = line->Replace( ((String^)"")->PadRight( tabSize, ' ' ), "\t" ) While ( (line = Console::ReadLine()) != nullptr ) If ( args->Length WriteLine( e->Message ) String^ usageText = "Usage: INSERTTABS inputfile.txt outputfile.txt" ![]() using namespace System Īrray^args = Environment::GetCommandLineArgs() It then uses the Console.ReadLine method to read each line in the file, replaces every sequence of four spaces with a tab character, and uses the Console.WriteLine method to write the result to the output file. ![]() It also redirects the standard output from the console to the output file. It opens the existing text file and redirects the standard input from the keyboard to that file. ![]() The following example requires two command line arguments: the name of an existing text file, and the name of a file to write the output to. The number of characters in the next line of characters is greater than Int32.MaxValue. ![]()
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