C + + Primer Plus (i): Start learning C + +

Programming features of the 1.c++:

(1) Structured programming: composed of if,for,while and other statements, emphasis on algorithm design, top-down design principles;

(2) Object-oriented programming: composed of classes, objects, etc., emphasizing the design of data, bottom-up design principles;

(3) Generic programming: composed of templates; emphasizes the creation of code modules suitable for various data types;

2. Source code-(compile)--Target code--(link)--executable file

3. Preprocessor handles compile directives with names beginning with #: #include <iostream>

The 4.c++ header file does not have an extension, and the C header file extension is. h; After the C header file is converted to a C + + header file, the file is renamed and the suffix is removed. h plus prefix C;

5.1) The namespace compiler directive is a C + + feature, variable, function, class is a standard component of C + + compiler, placed in the namespace STD, so the C + + header file variables, functions, classes, etc. are also placed in the STD;

2) using namespace std/using std::cout

The end of the 6.main function should be preceded by a return 0 statement;

7. When outputting, cout uses the operator to insert a string into the output stream, and the CIN use operator extracts characters from the input stream when entered;

C + + Primer Plus (i): Start learning C + +