|
The assert header is used for debugging purposes.
Macros:
assert();
External References:
NDEBUG
Declaration:
void assert(int expression);
The assert macro allows diagnostic information to be written
to the standard error file.
If expression evaluates to 0 (false), then the
expression, sourcecode filename, and line number are sent to
the standard error, and then calls the abort function. If
the identifier NDEBUG ("no debug") is
defined with #define NDEBUG then the
macro assert does nothing.
Common error outputting is in the form:
Assertion failed: expression,
file filename, line
line-number
Example:
#include<assert.h>
void open_record(char *record_name)
{
assert(record_name!=NULL);
/* Rest of code */
}
int main(void)
{
open_record(NULL);
}
|
