num1 >= 0x80 - What is 0x80?

Question

i see this in some code? Checks an int is greater then 0x80. What is 0x80? Is not an int.

Thanks

Answer 1

It is an integer literal - it's the hex number 80, which is decimal 128. The "0x" prefix indicates it being in hex.

For more details, look at the section 2.4.4.2 of the C# language specification: "Integer literals".

Answer 2

That is the hexadecimal literal for 128. It actually is an int. Any literal that starts with 0x is a hexadecimal literal.

Answer 3

It's a hexadecimal number.