What is the macro function?

What is the macro function?
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1 Answer

Answer :

Macro Substitution : They are two types of macro substitution.
 1 : Macro substitution without arguments.
2 : Macro substitution with arguments.
1 : Macro substitution without arguments : It is a process to substitute the constant or value in the place of an
identifier. It is possible to achieve this with the help of directive or macro definition statement #define.
 Syntax : #define identifier constant or expression
 Ex : #define PI 3.142
 #define MAX_MARKS 100
 #define MIN_MARKS 35
 }
Macro Substitution with Arguments :
Syntax : #define identifier(var1,var2,va3,….varn)string
 Where identifier is the name of macro function with the list of macro formal parameters
var1,var2,var3,…varn like the formal parameters in a function definition.
Ex : #define PROD(x) (x*x)
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