◄Up► ◄Contents► ◄Index► ◄Back► ──────────────────────────────────────────────────────────────────────────── The C run-time library contains about 400 functions, divided into the categories listed below: Category Contents Buffer manipulation Manipulate areas of memory on a character basis Character classification Test individual characters Data conversion Convert numbers to strings and vice versa Directory control Manipulate directory structure and information File handling Manipulate files Graphics - Fonts Font manipulation Graphics - Low-level Graphics primitives Graphics - Presentation Presentation and charting routines Graphics - Text Full screen text output I/O - Streams Stream I/O routines I/O - Low-level Low-level I/O routines I/O - Console and Port Console and port I/O routines Internationalization Localization routines Math Math routines Memory allocation Allocate, free, and reallocate memory Miscellaneous Miscellaneous functions Process control Manipulate processes and programs Searching and sorting Binary search, linear search, and quicksort routines String manipulation String functions System calls - BIOS BIOS interrupt services System calls - DOS DOS interface routines Time Manipulate system time Variable-length args Variable-length argument lists -♦-