C
C is a general purpose Programming Language. C has proven to be a pleasant, powerful, and versatile language for a wide variety of programs. Many of the modern languages like C++, Visual C++, Java, JavaScript, etc. are based on C Language. Therefore, not knowing this Language is considered to be a handicap. The fundamental types are characters, and integers and floating-point numbers of several sizes. Pointers provide for machine independent address arithmetic.
Salient Features
C is a general purpose Structured Language that is powerful, efficient and compact.
C is a combination of High level language and Assembly language that's why its good for man & assembler.
C is a robust language whose rich set of built-in functions and operators can be used to write any complex program.
C is a portable language.
C provides a variety of data types.
In addition, there is a hierarchy of derived data types created with pointers, arrays, structures, and unions.
Programming in C is efficient & fast because of its data types and various operators.
Application
90% of UNIX Operating System is written in C Language.
C++
C++ is an Object Oriented Programming Language that is powerful, efficient and compact. It includes concepts like Polymorphism, Dynamic Binding, Data hiding, Operator encapsulation and inheritance, which are to be observed in C. User defined objects (instances) can be reused with and without modifications to generate new application. This reduces coding to greater extents.
Salient Features
For file accessing, you can use file objects to open or manipulate a file.
C++ is a Robust language whose rich set of built-in functions and operators can be used to reduce complexity of programs.
C++ is also a Portable language.
Application
Complex real-time System. Simulation and Modeling. Object-oriented database. Hypertext, hypermedia and expert text. Neural networks and parallel programming. Communication System.