Simple Memory Leak Detection

Listing 1: mem_leak.cpp
Different functions used to detect memory leaks

/****************************************************************************/
/* This program shows the different functions used to detect memory leaks  */
/* Author : Sumit Agarwal                                              */
/****************************************************************************/

#include <iostream.h>
#include <crtdbg.h>
#include <string.h>

int main()
{
    _CrtMemState sh1, sh2, sh_diff;

    _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
    _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDOUT);
    _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE);
    _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDOUT);
    _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
    _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDOUT);

    char *ptr1 = new char[100];
    strcpy(ptr1,"This memory leak was created by Sumit");
    cout << ptr1 << endl << endl;;

    _CrtMemCheckpoint(&sh1);

    char *ptr2 = new char[10];
    strcpy(ptr2,"ABCDEFGHIJKL"); // copying 12 char in string of size 10

    _CrtMemCheckpoint(&sh2);
    
    cout << "\nOutput of CrtCheckMemory\n" << flush;
    _CrtCheckMemory(); // shows corrupt memory
    
    _CrtMemDifference(&sh_diff, &sh1, &sh2); // calcs. diff. between cp1 and cp2

    cout << "\nOutput of CrtMemDumpStatistics\n" << flush;
    _CrtMemDumpStatistics(&sh_diff); // shows the diff. calculated above

    cout << "\nOutput of CrtDumpMemoryLeaks\n" << flush; 
    _CrtDumpMemoryLeaks(); // any memory leak at the end of execution ?

    return 0;
} 

//End of File