What is a predefined macro?
3.7 Predefined Macros Several object-like macros are predefined; you use them without supplying their definitions. They fall into three classes: standard, common, and system-specific. In C++, there is a fourth category, the named operators. They act like predefined macros, but you cannot undefine them.
What are compiler macros?
A macro is a fragment of code which has been given a name. Whenever the name is used, it is replaced by the contents of the macro. However, the preprocessor operator defined (see Defined) can never be defined as a macro, and C++’s named operators (see C++ Named Operators) cannot be macros when you are compiling C++.
What are macros in Excel?
If you have tasks in Microsoft Excel that you do repeatedly, you can record a macro to automate those tasks. A macro is an action or a set of actions that you can run as many times as you want. When you create a macro, you are recording your mouse clicks and keystrokes.
What is _WIN32 macro?
_WIN32 Defined as 1 when the compilation target is 32-bit ARM, 64-bit ARM, x86, or x64. _WIN64 Defined as 1 when the compilation target is 64-bit ARM or x64.
What are the various predefined macros in C Explain using suitable examples?
C Predefined Macros
| No. | Macro | Description |
|---|---|---|
| 1 | _DATE_ | represents current date in “MMM DD YYYY” format. |
| 2 | _TIME_ | represents current time in “HH:MM:SS” format. |
| 3 | _FILE_ | represents current file name. |
| 4 | _LINE_ | represents current line number. |
Where is Msc_ver defined?
_MSC_VER is only defined when compiling with the Visual Studio C++ compiler. If you use any other compiler it will not be defined. Yes, it compiling with the Visual Studio C++ compiler but enviroument not use any windows librares like Windows.
How are macros defined?
A macro is an automated input sequence that imitates keystrokes or mouse actions. A macro is typically used to replace a repetitive series of keyboard and mouse actions and used often in spreadsheets and word processing applications like MS Excel and MS Word.
What is macro in Excel with example?
Macro in Excel helps you to achieve that. In a layman’s language, a macro is defined as a recording of your routine steps in Excel that you can replay using a single button. For example, you are working as a cashier for a water utility company.
Why would you use macros in Excel?
One of the more powerful, but seldom used functions of Excel is the ability to very easily create automated tasks and custom logic within macros. Macros provide an ideal way to save time on predictable, repetitive tasks as well as standardize document formats – many times without having to write a single line of code.
Where is _WIN32 defined?
WIN32 is defined inside the windows header files, but you can pass it to the compiler as well (“-DWIN32” for gcc for example). Try it and see whether it compiles. or just add a -DWIN32 to the CFLAGS.
Is _WIN32 defined for x64?
The symbol _WIN32 is defined by the compiler to indicate that this is a (32bit) Windows compilation. Unfortunately, for historical reasons, it is also defined for 64-bit compilation.