strcpy函数的重写

char* mstrcpy(char* strDest,const char* strSrc)
{
    if(strDest==NULL||strSrc==NULL)return NULL;
    char *add=strDest;
    while((*strDest++ = *strSrc++)!='\0');
    return add;
}

int _tmain(int argc, _TCHAR* argv[])
{
    char *a="adslj";
    char *b;
    cout<<mstrcpy(b,a);
    system("pause");
    return 0;
}