Thursday 1 August 2013

Things To Know

  • C is developed by Dennis Ritchie.
  • C is a Middle Level Language.
  • C program is often known as Source Code.
  • In C, statements are executed in the sequence they have written.
  • The symbol ';' used to terminate a statement.
  • All statements are entered in small case letters.
  • No blank spaces are allowed within a variable, constant or keyword.

 

PREPROCESSOR:- 

  • Before a C program is compiled it is passed through another program called preprocessor.
  • Preprocessor works on the source code and creates 'Expanded Source Code'.
  • Preprocessor offers several features called preprocessor directives or preprocessor command such as #include is a preprocessor directive.
  • Each preprocessor directive begins with a # symbol.
  • Preprocessor directives are:-
  • Macro expansion
  • File inclusion
  • Conditional Compilation
  • Miscellaneous directives


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