<aside> 💡 Introduction Unlike last term, these notes will (probably) be very abstract and way less concise. 2024: NVM! It turned out to be one of the most detailed CS246 notes you can find out there (feel free to contribute to make it even better!)

Note: I don’t think this is a good primary source for directly learning CS246 (especially if you are new to C++), but rather a supplementary resource to accompany your studies as you take this course.

</aside>

Object-oriented programming

Three perspectives

• Programmers’ perspective
• Compiler’s perspective
• Designer’s perspective

Hello World

import <iostream>
using namespace std;

int main(){
    cout << "Hello World" << endl;
    return 0;
}

Input / Output

Some IO notes:

Streams: It is an abstract type that represents a sequence/block of characters

• I/O streams cout/cerr - stdout/stderr

• cin - reading from stdin

• << - put to (stdout)

• >> - get from (stdout)

• By default, cin skips leading whitespace(space/tab/newline)

• Implicit conversion from cin's type(istream) to bool