NAME

assert − program verification

SYNTAX

#include <assert.h>

assert(expression)
int expression;

DESCRIPTION

The assert macro indicates that expression is expected to be true at this point in the program.  It causes an exit(2) with a diagnostic comment on the standard output when expression is false (0).  Compiling with the cc(1) option −DNDEBUG effectively deletes assert from the program. 

DIAGNOSTICS

´Assertion failed: file f line n.’ F is the source file and n the source line number of the assert statement.