Author: Bjarne Stroustrup Supported programming paradigms: procedural, object-oriented, generic. Based on on the C programming language. OOP in C++ was inspired by the Simula64 programming language. All C programs are valid C++ programs. The name of the C++ programming language is related to the incremental operator "++". How to create a C++ program: compiling to object files, linking object files to an executable version of the program.
Introduction
Functions
C++ program consists of functions. Function consists of statements. Each statement must end with the semicolon character.
Prototype vs implementation.
Function main()
Function main() is the entrypoint of an C++ application.
Variants:
- int main() {return 0;}
- void main() {return 0;}
- void main(void) {return 0;}
- int main(void) {return 0;}
Console
How to delay program and wait for the press of the key Enter: cin.get();
Printing text to console: cout << "some text"; //operator overloading: <<
Reading text from console: cin >> carrots;
How to print end line: "\n" or std::endl
Comments
One line: // comment
Multi line: /* comment */
Preprocessor directives
Example: #include <iostream>
Importing namespaces
using namespace std;
using std::count;
C++ statement
Each C++ statement must be ended with the semicolon character ;
Declaration (statement type)
This allocates memory.
Example: int carrots;
Assignment (statement type)
Example: carrots = 15;
Class
Class is user defined type