Compile Conditional Field Charter For Free

Conditional compilation can be useful when compiling code for a debug build or when compiling for a specific configuration. A conditional directive beginning with an #if directive must explicitly be terminated with an #endif directive. #define lets you define a symbol.

In conditional compilation, particular blocks of code in a program are compiled selectively while others are ignored. For example, you may want to write debugging statements that compare the speed of different approaches to the same programming task, or you may want to localize an application for multiple languages.

Conditional compilation is the process of selecting which code to compile and which code to not compile similar to the #if / #else / #endif in C and C++. Any statement that is not compiled in still must be syntactically correct.

Conditional Compilation: Conditional Compilation directives help to compile a specific portion of the program or let us skip compilation of some specific part of the program based on some conditions. In our previous article, we have discussed about two such directives 'ifdef' and 'endif'.

Conditional compilation provides a way of including or omitting selected lines of source code depending on the values of literals specified by the DEFINE directive. In this way, you can create multiple variants of the same program without the need to maintain separate source streams.

Conditional compilation is controlled by $IF , $ELSE , and $END constructs, which behave in a similar way to the COBOL IF construct. Conditional compilation also supplies the $DISPLAY Statement, which can be used to display a message during compilation or include a version number in the object file.

The compilation process in C is converting an understandable human code into a Machine understandable code and checking the syntax and semantics of the code to determine any syntax errors or warnings present in our C program.