Which programming language(s) are used to make WhatsApp??

Answer 1

whatsapp is programmed in Erlang

Answer 2

Whatsapp for android - Java
Whatsapp for ios - swift

Answer 3

not sure but most probably JAVA

Answer 4

u use html css , bootstrap for making front end of whatsapp. after that use php , mysql, javascript, ajax, jquery(for giving animation like gif etc.) for sending messages and perform other function.....