Convert a C printf(%c) to C#
I'm trying to convert this C printf to C#
printf("%c%c",(x>>8)&0xff,x&0xff);
I've tried something like this:
int x = 65535;
char[] chars = new char[2];
chars[0] = (char)(x >> 8 & 0xFF);
chars[1] = (char)(x & 0xFF);
But I'm getting different results. I need to write the r开发者_如何学运维esult to a file so I'm doing this:
tWriter.Write(chars);
Maybe that is the problem.
Thanks.
In .NET, char variables are stored as unsigned 16-bit (2-byte) numbers ranging in value from 0 through 65535. So use this:
int x = (int)0xA0FF; // use differing high and low bytes for testing
byte[] bytes = new byte[2];
bytes[0] = (byte)(x >> 8); // high byte
bytes[1] = (byte)(x); // low byte
If you're going to use a BinaryWriter than just do two writes:
bw.Write((byte)(x>>8));
bw.Write((byte)x);
Keep in mind that you just performed a Big Endian write. If this is to be read as an 16-bit integer by something that expects it in Little Endian form, swap the writes around.
Ok,
I got it using the Mitch Wheat suggestion and changing the TextWriter to BinaryWriter.
Here is the code
System.IO.BinaryWriter bw = new System.IO.BinaryWriter(System.IO.File.Open(@"C:\file.ext", System.IO.FileMode.Create));
int x = 65535;
byte[] bytes = new byte[2];
bytes[0] = (byte)(x >> 8);
bytes[1] = (byte)(x);
bw.Write(bytes);
Thanks to everyone. Especially to Mitch Wheat.
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