A statement written in the source code of a program that lets the programmer instruct the compiler to perform a specific operation within the compilation phase. For example, the #include directive ...

Though you can write "C" code in Notepad, you must have a C compiler, such as the compiler included with the Microsoft Visual Studio development suite, to compile the code. To write a C code file in ...

Older CPUs and some fairly modern microcontrollers are not made to readily support C compilers. Among those are the 1802, some 8-bit PICs, and the 6502 at the heart of the Commodore 64. That’s not to ...