C and C++ notes / Semi-sorted

Notes related to C and C++ C and C++ notes / Versions and variations C and C++ notes / Types, values, some basic libraries C and C++ notes / Syntax notes C and C++ notes / Structuring C and C++ notes / functions and parameters C and C++ notes / Structs and classes C and C++ notes / Data structures C and C++ notes / Errors Programming_notes/Compiling_and_linking#C_.2F_C.2B.2B C and C++ notes / Semi-sorted Note: Some notes describe behaviour common to most variants - for C mostly meaning C89 (and a bit of C99), unless mentioned otherwise.

Debugging

assert.h

(ANSI-C, C99) (verify)

assert() statements (via preprocessor) that are only compiled in when NDEBUG is not defined.

This lets you have debug expressions that are automatically omitted from production, without explicitly wrapping them in #ifndef NDEBUG ... #endif.

If an assert fails:

• error information is written to stderr (including __FILE__, __LINE__, __func__ if C99, and the assert expression as text)
• abort() is called