拷贝字符串

void *memcpy(void *dest,const void *src,size_t count){
    char *pdest = static_cast<char*>(dest);
    const char *psrc = static_cast<const char*>(src);
    while(*psrc!='\0'){
        *pdest++=*psrc++;
    }
    *pdest = '\0';
    return dest;
}
int main(int argc, _TCHAR* argv[])
{
    char *from = "helloworld";
    char *aim = new char[sizeof(from)+1];
    char *temp = static_cast<char*>(memcpy(aim,from,sizeof(from)));
    cout<<temp<<endl;
}