It can be useful if tokens are concatenated into code to simplify some complex declarations. The result, which you probably expected to be equal to the arithmetical formula v*v + 2*v + 1 comes out to 2*v + 1.Now SQUARE(v + 1) expands to ((v + 1)*(v + 1)). It’s part of the macro. Macros are categorized into two main groups: object-like macros and function-like macros. The … Macros can even accept arguments and such macros are known as function-like macros. Man kann diesen Makros, wie bei normalen Funktionen auch, Argumente übergeben. All rights reserved | Da es sich hier um Textersetzungen handelt, werden Datentypen nicht beachtet.Dieses Beispiel teilt einen Variablen-Wert mittels einer Makro-Funktion durch zwei.Nach dem Präprozessor sieht der Quelltext wie folgt aus. It can be useful if tokens are concatenated into code to simplify some complex declarations. And, TEST1 macro is defined so, string “MACRO TEST1 is defined” is printed and since macro TEST3 is not defined, so “MACRO TEST3 is defined” is not printed.Inline functions are those functions whose definition is small and can be substituted at the place where its function call is made. Probably, you’ve heard the advice to put curly braces around macros so they behave like functions, but if you define a function local variable in function B, then function A which happens to call function B will never be able to safely access that variable… not that macros ever truly behave like functions anyway.If you use gcc, I believe -E is the option to print out postprocessed code. d) Macros can cause side effects as shown in above CUBE() example. To define a macro that uses arguments, you insert parameters between the pair of parentheses in the macro definition that make the macro function-like. Sure, they have a bit of a strange syntax, but they “behave” like normal functions.Then what is the difference?Well, macros are a text processing feature. Thanks a lot!Yes, i agree with SeattleC++ please make a change in that particular Macro definition.Need on your opinion why following macro-function doesn’t work:notice that no space is allowed between the identifier and the parenthesis, as you wrote:also pay attention to the pitfalls of such writing, i.e:it will be replaced with (int)a*a, means that the casting is applied to the left part only.To SeattleC++: There is nothing “obscure” about the comma operator, unless you’re unwilling to read. Many C and C++ programming beginners tend to confuse between the concept of macros and Inline functions. The macro expansion along with the typecast will look like this: (int)(a*a). Mit sogenannten Makro-Funktionen lassen sich komplexere Ersetzungen realisieren. Usually people say that having an inline function increases performance by saving time of function call overhead (i.e. Der Makro-Funktion werden die zwei Namen der Variablen und der Datentyp im Parameter mitgeteilt. // This is an object-like macro #define PI 3.14159265358979 // This is a function-like macro. Very useful for macro debugging.OMG. Whenever calling to inline function is made, function call would be replaced by definition of inline function.Macro SQUARE above is typical of naive macro usage and demonstrates one of the weaknesses of C macros. Der Körper der Makro-Funktion besteht aus vier Anweisungen:Der Präprozessor wandelt die Zeile, in der sich der Aufruf der Makro-Funktion It is possible for a C program to print the currently executing line of source code, the file of the source code, and the name of the current function. It is very simple. Der Makroname wird durch eine Kopie des Makrotexts ersetzt. Macros can even accept arguments and such macros are known as function-like macros. What happens to the macrowhen you say SQUARE(v + 1)? The Concept of C Macros. C99 adds support for function-like macros with a variable number of arguments. Macro Function; Macro is Preprocessed: Function is Compiled: No Type Checking is done in Macro: Type Checking is Done in Function: Using Macro increases the code length : Using Function keeps the code length unaffected: Use of macro …

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