Build Me A download Manager ( using c++ )

Small download manager with these features: (Source code required) less than 10MB 1 - Download a file from url passed by as command line arg ([url removed, login to view] https://url.... , always https.) 2 - Save File in any 3 - Show progress bar, like Chome download manager... 4 - Show bottun to cancel download ( but partial download should reusable in future) 5 - Check if file is corrupted before run it... Use Case: 1 - Another app execute the download manager: [url removed, login to view] [url removed, login to view] 2 - Download manager check if partial download exist, or a complete download already done before... 2.1 if complete download exist, run file ( its always is a executable) 2.2 if partial download exist, continue download... 3 - after download complete, check file and run it.. ( in a new process, and exit download manager..) Done. Any questions, pls, PVT Thanks...