Introduction to C++¶

Basics¶

• curly braces {} alone determine nesting（scope 作用域）
• semicolon ; ends a statement
• stream insertion operator << to push data to the console
• comments:
  • /* */
    

    /*
    * This is a multi-line comment
    */
    

  • //：单行注释
• all statements must be inside of a function
• functions are not always part of a class (unlike Java)
• main: starting point of a program
  • returns int exit code (0 for success)

graph LR
    A[source code] --compile--> B[binary <i>object</i> file]
    B --link--> D
    C[library] --link--> D[Executable file<br><i>platform dependent</i>]