C is a language that could be used to create macros. A macro, defined as a set of instructions to evaluate input and give a set output is refered to as a statement block in C. If() statements can be used to evaluate an input for a given set of instructions, there are many others but given the structure of your question you should start with these, if() statements, and move on to the more advanced ones when you are comfortable with the language.
I recomend this site for those just starting out.
http://www.cplusplus.com/
AnswerParametrized and parameter-less, examples:
#define MAXNUM 32
#define SQUARE(x) ((x)*(x))
Other categorization: macros with/without value:
#define HEADER_INCLUDED
#define TRUE 1
They do exist in C and C++.
Types of macros In general, there are two types of macros: ExecutiveThese macros generate either code or data that is incorporated into the program being assembled.Generally, an executable instruction is generated.DeclarativeThese macros produce information used by the assembly process while generating code.z/TPF system programs use a large set of macro instructions to generate linkages or to simply generate inline code. Many of these macros are restricted to system programs because the macros are subject to change in future releases and represent an unprotected interface. A macro with an unprotected interface is called a system macro. Because some z/TPF system programs run in the application execution environment, some of the system macros also generate SVC linkages.
Component Macros are built in functions used to control components such as an LCD display, EEPROM, switches, serial data, etc. Macros are user created functions that help make the program more modular. As far as I can tell, there are only those 2 types.
With macros, you can perform long or boring tasks just by a single click or keystroke combination. Also, you would not need to repeat the same action over and over again.
In programming, specifically in C and C++, the hashtag (#) is used to include files into the main program and to create macros.
it contains the information used by character classification and character conversion macros
Macros are very common and often used in C programming to declare constants, such as strings, addresses, or any other values such as maximum number of elements in an array, and so on. For those who are not familiar with them, Macros are declared by the #define keyword. Macros are also used to define some basic functionality given a set of 1 or more typeless parameters, similarly to an inline function.
Macros are used to automate repetative tasks.
Macros are used to automate repetative tasks.
You can open the Macros section and run macros from there. The quickest way to do that is press Alt - F8. You can also run macros by clicking on buttons or other objects that you have assigned them to.
Macros isupper and islower from ctype.h will help you.
There can be many reasons why your macros are not working. Check security settings to ensure your version of Excel has macros enabled. Many times, the default installation disables the ability to use macros. Ensure you accept security certificates for the author of the macros.