You may use #define to create function-like macros with or without arguments. Macros are syntactically similar to function calls. When a defined macro is encountered in the source file, the macro-name and any arguments are replaced by the replacement-text. For example:
#define my_macro(a,b,c) a+b+c
int func (int x, int y, int z) { return(my_macro(x,y,z)); }
appears as follows after macro expansion:
int func (int x, int y, int z) { return(x+y+z); }
Refer to Macros for a complete description of how to define and use macros in your C programs.
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