3. Introduction to functions

An introduction to functions, including function parameters, namespaces, and scopes. The keyword const is introduced and will be revisited over several chapters.

The special characteristics of main and command line argument handling are introduced.

• 3.1. Introduction to functions
  • 3.1.1. Function declarations and compilation units
  • 3.1.2. The call stack
• 3.2. Passing parameters
• 3.3. The main function
  • 3.3.1. Parsing command line arguments
• 3.4. Scope
  • 3.4.1. Local variables
• 3.5. Namespaces
  • 3.5.1. Prefer using declarations to using namespace std
• 3.6. Keyword: const
  • 3.6.1. Prefer const to #define
  • 3.6.2. Keyword: constexpr
  • 3.6.3. Guidelines for now
• 3.7. Keyword: auto
• 3.8. Error handling
  • 3.8.1. Handling multiple errors at once
• 3.9. Exception handling
  • 3.9.1. Standard exceptions
  • 3.9.2. Using exceptions
  • 3.9.3. Exceptions and I/O streams
• 3.10. Static functions and variables
  • 3.10.1. Anonymous namespaces

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