Question

What is the C# equivalent of the following C code:

while((c = getchar())!= EOF)
   putchar(c);

I know getchar() and putchar() are going to be replaced by Console.Read and Console.Write respectively but what about the EOF. Especially keeping in mind, C# works with unicode and C with ASCII, what are the implications of that ??

Answer 1

Console.Read() returns -1 on EOF (coincidentally, EOF is defined as -1 on most platforms).

You can do:

int c;
while ((c = Console.Read()) != -1) {
   Console.Write(Convert.ToChar(c));
}

Also, C# works natively with UNICODE in the same way that C works natively with ASCII, i.e. there are no more implications. System.Char represents an UCS-2 UNICODE character, which also fits into an int, so everything will be all right.