C 和 C# 和 C++ 的分別

Q1 :
C is a basic programming language.
C++ is an extention of C, which includes more useful library and object-oriented programiming,
C# is a new programming language developed by Micro$oft. It restricts the flexiblity of C++. It also enhences the object-oriented feature.

Q2:
I suggest you learn C first so that you can know the basic syntax of these three language.

Q3:
Search google, yahoo and wiki.