assert()

Syntax

  #include <assert.h>

  void assert(int expr);

Description

assert() is a macro that indicates expression expr is expected to be true at this point in the program. If expr is false (0), assert() halts the program. Compiling with option -DNDEBUG or placing the preprocessor control statement

  #define NDEBUG

before the #include <assert.h > statement effectively deletes all assertions from the program.

See also

abort() and

exit()