Almost every smartphone carries the giant of instant messengers – Whatsapp.
Official WhatsApp announced on 21/01/2015 that there is official Web version for Whatsapp for PC (currently Only for Windows phone and Android users).
Users with Android or Windows Phone device who wish to start using WhatsApp on PC need to go to: https://web.whatsapp.com then a QR code will appear there and they will have to scan it in their device.
Update your WhatsApp app to the newest version, open the app and then scan the QR code from the WhatsApp app as you can see in this print screen:
Although WhatsApp can now be used for PCs, the client is currently only available on Android devices and has many bugs, plus the user device must be connected to the internet at all times in order for the WhatsApp web application to work. Instead of using WhatsApp web version You can download Bluestacks, which is an Android app player to run the messenger on their PC or laptop.