assert : assert « assert.h « C Tutorial





ItemValue
Header fileassert.h
Declarationvoid assert(int exp);
Functionwrites error information to stderr and then aborts program execution if the expression exp evaluates to zero.


Define NDEBUG to ignore the assert() macros.

#include <assert.h>
 
  int main(void){
    assert(1==2);

  }
Assertion failed at assert0.c line 6: 1==2
Exiting due to signal SIGABRT
Raised at eip=0000bfce
eax=0009a26c ebx=00000120 ecx=00000000 edx=00000000 esi=00000054 edi=0001a3a0
ebp=0009a318 esp=0009a268 program=C:\JAVA_DEV\WEB\DEV\C\MAIN.EXE
cs: sel=01a7  base=029a0000  limit=0009ffff
ds: sel=01af  base=029a0000  limit=0009ffff
es: sel=01af  base=029a0000  limit=0009ffff
fs: sel=017f  base=0000dc90  limit=0000ffff
gs: sel=01bf  base=00000000  limit=0010ffff
ss: sel=01af  base=029a0000  limit=0009ffff
App stack: [0009a3a0..0001a3a0]  Exceptn stack: [0001a300..000183c0]

Call frame traceback EIPs:
  0x0000bef4
  0x0000bfce
  0x0000ab69
  0x00001e20
  0x0000a738










17.1.assert
17.1.1.assert