# What does this symbol mean?

# means numbers in many places. For example, the file record indicates the file number 1, number 2 and so on in the form of # 1 and #2. The representation methods of buildings are # 10 1, indicating buildings 1, rooms 1 and so on. Note: "#" should be placed before the number here.

# also stands for the British unit of weight "pound" in English. When used as the symbol of "pound", the number should precede "#", such as 5#(5 pounds), 15.3#( 15.3 pounds) and so on. It is just the opposite of the usage of "which number".

Extended data:

# In C language

C# is pronounced C Sharp, which means C+++++.

# As an instruction itself, it has no other meaning/effect.

The # symbol must be the first character of the line, except for any blank characters. The preprocessing instruction is a line of code that begins with a # sign.

# is followed by the instruction keyword, and any number of blank characters are allowed between the keyword and the # symbol.

The whole line of statements constitutes a preprocessing instruction, which will transform the source code before the compiler compiles.

Here is an example:

# Defines the identifier string.

# include & lt header file name. h & gt

"#" indicates that this is a preprocessing command. Any command that starts with "#" is a preprocessing command.