C + + memory leak detection

Using libraries to detect memory leak information

#define _CRTDBG_MAP_ALLOC//Without this macro definition, we can only know that there is a memory leak, but there is no way to know where to apply for memory forgot to release

#include <stdlib.h> #include <crtdbg.h>int main (void) {char *p = (char *) malloc (sizeof (char) * 100); _CrtDumpMemoryLeaks ();}

Using CRTDBG to detect a memory leak is simple, as long as you define _CRTDBG_MAP_ALLOC in the first line of the file, and then include the header file Crtdbg.h, call _CrtDumpMemoryLeaks where the program requires memory detection. Can output memory leak information, such as the above program, we have requested 100 bytes of memory and not released, but we can clearly see where the memory leaks

C + + memory leak detection