Cs50 - Study guides, Class notes & Summaries

Harvard CS50 Week 1: Data Types & Variables Questions and Answers. What is an "int?" - CORRECT ANSWER -The int data type is used for variables that will store integers - Integers always take up 4 bytes of memory(32 bits). Range of information that can be stored is limited to 32 bits What is an "unsigned int?" - CORRECT ANSWER - qualifier that effectively doubles the range of positive variables of that type at the expense of negative values What is a "char?" - CORRECT ANSWER - u...

A sequence of steps that will repeat a number of times Statements A category of instructions Boolean Expression A question that is true or false, yes or no, on or off, 0 or 1. Variable Like a container. An allocation of memory for a changeable value. Condition Only occurs if something is true Multi-Threaded Can do multiple things at once ASCII numbers for 0-9 48-57 Binary prefix for 0-9 numbers

Why were computers designed based off a base 2 system? 7 is the highest number you can represent. It is not 8, because when every switch is off (otherwise known as 000 in binary) you start off with the number "0". with 3 switches you can store up to 8 numbers, but only 7 "non-zero" numbers. The numbers you can store are: 000 (0), 001 (1), 010 (2), 011 (3), 100 (4), 101 (5), 110 (6), and 111 (7). What is the highest number you can represent with 3 switches that can either be "ON" or ...

Code C Study Guide Test. #include <cs50.h> #include <stdio.h> - CORRECT ANSWER in all c50 code [data type] [variable] = get_[variable type]("[display]") - CORRECT ANSWER input syntax [data type] [variable] = [variable] - CORRECT ANSWER assigning variable syntax in all statements - CORRECT ANSWER ; printf("%[data type letter]", [variable]) - CORRECT ANSWER display variable int main(void){[all code]} - CORRECT ANSWER in all c programs if ([boolean statement]...

Code C Review Study Guide Test. #include <cs50.h> #include <stdio.h> - CORRECT ANSWER in all c50 code [data type] [variable] = get_[variable type]("[display]") - CORRECT ANSWER input syntax [data type] [variable] = [variable] - CORRECT ANSWER assigning variable syntax in all statements - CORRECT ANSWER ; printf("%[data type letter]", [variable]) - CORRECT ANSWER display variable int main(void){[all code]} - CORRECT ANSWER in all c programs if ([boolean sta...

ACCT ETHICS – CH1 QUIZ/LEARNSMART PRACTICE TEST. The ancient Greeks thought of the virtues as characteristics of behavior that: A) Could lead to a good life B) Make up the "six pillars of character" C) Support the rights theory D) Rationalize unethical actions - CORRECT ANSWER Could lead to a good life Required information [The following information applies to the questions displayed below.] Yes. Cheating occurs at the prestigious Harvard University. In 2012, Harvard fo...

CITS2401 Written Exam Questions Correctly Answered. Write a function count_word(sentence, word) that takes 'sentence' and 'word' as parameters and returns the number of times the 'word' appears in 'sentence'. You may assume the string has at least one character in it. - CORRECT ANSWER def count_word(sentence, word): return (word) Write a function is_a_number(string) that takes a string as a parameter and returns True if the string is an integer value, otherwise returns False. Y...

C# Module 4 Questions And Answers. Class - CORRECT ANSWER -Template -Defines structure for all objects that are going to be of that class type -When define a class, describe its attributes (fields) in terms of data and behaviors (methods) in terms of what kind of things it can do -By abstracting attributes and behaviors, can create a class to serve as a template from which many objects of the same type can be instantiated Access modifiers - CORRECT ANSWER -Classes: public, other class...

Python: Data Types Study Guide Test. True - CORRECT ANSWER A constant representing the true value of the boolean type. False - CORRECT ANSWER A constant representing the false value of the boolean type. None - CORRECT ANSWER A constant frequently used to represent the absence of a value, as when default arguments are not passed to a function. strings - CORRECT ANSWER A string literal, or string, holds any combination of letters and numbers you would like it to hold. Any number it h...

Understanding Technology – Multimedia Questions And Answers. file formats for recorded music - CORRECT ANSWER aac, midi, mp3, wav midi - CORRECT ANSWER way of storing musical notes for certain songs file formats - CORRECT ANSWER a way of storing 0s and 1s on disk so that a certain software knows how to interpret it sampling frequency - CORRECT ANSWER number of times per seconds we take a digital snapshot of what a person would hear bit depth - CORRECT ANSWER Number of bits use...