[c-prog] Help me pls, to make a decision

[ismayilov_ali]

Hi, everybody. I'm new in programming. I want to ask you, which 
programming language should i learn. First, i learnt pascal. However, i 
do not use pascal now. Must i know every programming language? I mean 
Java, php, python, ruby, c, c++, c#, lisp, asm, etc.