Question

Why we use # in the header file of any program

Answer 1

it's nothing it's just a sign

Answer 2

Following are theUse of # in the header file of c-programming:

Explanation:

• The # is a symbol that is used in the c-programming language to define the preprocessor directive.
• This #tag symbol states the statement to be processed before the code will handover to the compiler.
• This is used to states the compiler that which code will no need to compile.
• It will also use to states the definition of predefined function which is used in the program.

Learn More :

• C-Program : https://brainly.in/question/637147