Cocoa is an object-oriented application programming interface for macOS, and it is based on the Objective-C language. It represents the latest development framework for macOS, and it is not compatible with older, C language-based applications.
VC++ (also known as Microsoft Visual C++) is an integrated development environment (IDE) for the C, C++, and C++/CLI programming languages. It was first released as a standalone product, but later became a part of Visual Studio.
Visual C++ has tools for developing and debugging C++ code, especially code written for Windows API, DirectX and .NET Framework.
C++ is a general-purpose programming language that combines features of both high-level languages (allowing powerful information management) and low-level languages (permitting great control over the details of the program execution and operations).
It has no memory management, which can be a disadvantage for novice programmers, but problems can easily be avoided and/or detected.
The C language is a structured programming language developed in the mid 70’s by Dennis Ritchie during his collaboration with Bell Labs. Initially, the C language was created for UNIX operating system development and is based on two languages: BCPL (written by Martin Richards) and B programming language, which was written by Ken Thompson in the ‘70s.
C is ideal for developing firmware or portable applications. It supports structured programming, lexical variable scope and recursion. Today, C is one of the most widely used and popular programming language.