In Simple manner C++  is a languageand  and is a extension of C (which follow the oops concept) and turbo C++ IDE is a compiler which provide a integrated development environment.

C is structured programming language. Turbo C refers to a specific compiler made by Borland that can be used for C programming.

C++ is a superset of C, meaning everything that you can do in C, you can do in C++. C++ also supports object-oriented programming through the use of classes and inheritance.

C# is another language from Microsoft. It is similar in structure to Java and syntactically to C++. It does not compile down to native machine code, but rather CIL, an intermediate assembly type language. Therefore, to run a CIL or .NET program, the appropriate runtimes must also be installed. C# is completely object-oriented unlike C++.