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C++ History

• C++ derived from C derived from B derived from BCPL language
• the ‘++’ in the name is the ++ operator
• C was developed by Dennis Ritchie at AT&T Bell labs in 1970s
• C++ was developed by Bjarne Stroustrop at AT&T Bell labs in 1980s
  • Overcome shortcomings of C
  • C was subset of C++ until 2003
  • Introduced OOP (Object Oriented Programming)
• C++ Design Concerns
  • Systems Programming
  • Embedded systems
  • Resource constrained systems
  • Low level programming
• C++ Standards (C++89, C++99, C++11, C++14, C++17, C++20, C++23)
• New standards make language faster, safer, more powerful, more flexible, easier to use, keep backward compatibility, up-to-date with new standards

C++11, C++14 Features

1. Type Inference with Auto

• Type interface is the ability of the compiler to infer the type of a given variable without explicitly stating it
• This is achieved using the keyword auto
• auto keyword replaces the type identifier like int, string, double, etc.
• An initial value should be assigned in order for the compiler to infer the type
• Type inference using auto keyword simply tells the compiler to deduce the type of a declared variable from its initialization expression
• It maybe better to declare the type for simple types, so it is explicitly stated
• auto keyword has value when used for long complex types and it forces initializing variables