CD.cpp

#ifdef WINDOWS
#include <direct.h>
#define GetCurrentDir _getcwd
#else
#include <unistd.h>
#define GetCurrentDir getcwd
#endif

int main()
{
    char cCurrentPath[FILENAME_MAX];

    if ( !GetCurrentDir(cCurrentPath, sizeof(cCurrentPath)))
    {
        return 1;
    }

    cCurrentPath[sizeof(cCurrentPath) - 1] = '\0'; /* not really required */

    printf("The current working directory is %s\n", cCurrentPath);
}