NAME assert - expression verification macro CONTENTS Synopsis Description Examples See Also Standards History SYNOPSIS .In assert.h assert expression DESCRIPTION The assert macro tests the given expression and if it is false, the calling process is terminated. A diagnostic message is written to stderr and the function abort(3) is called, effectively terminating the program. If expression is true, the assert macro does nothing. The assert macro may be removed at compile time by defining NDEBUG as a macro (e.g., by using the cc(1) option -D NDEBUG). EXAMPLES The assertion: "assert(1 == 0);" generates a diagnostic message similar to the following: "Assertion failed: (1 == 0), function main, file assertion.c, line 100." SEE ALSO abort(3) STANDARDS HISTORY
If expression is true, the assert macro does nothing.
The assert macro may be removed at compile time by defining NDEBUG as a macro (e.g., by using the cc(1) option -D NDEBUG). EXAMPLES The assertion: "assert(1 == 0);" generates a diagnostic message similar to the following: "Assertion failed: (1 == 0), function main, file assertion.c, line 100." SEE ALSO abort(3) STANDARDS HISTORY
"assert(1 == 0);"
generates a diagnostic message similar to the following:
"Assertion failed: (1 == 0), function main, file assertion.c, line 100."
SEE ALSO abort(3) STANDARDS HISTORY
