Hello World!
• joshwrou
1 like • Aug 31, 2020
C++
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#include <iostream>#include "PlaylistNode.h"using namespace std;void PrintMenu(string title);int main() {string plTitle;cout << "Enter playlist's title:" << endl;getline(cin, plTitle);PrintMenu(plTitle);return 0;}void PrintMenu(string title) {Playlist list;string id;string sname;string aname;int length;int oldPos;int newPos;char choice;while(true) {cout << endl << title << " PLAYLIST MENU" << endl;cout << "a - Add song" << endl;cout << "d - Remove song" << endl;cout << "c - Change position of song" << endl;cout << "s - Output songs by specific artist" << endl;cout << "t - Output total time of playlist (in seconds)" << endl;cout << "o - Output full playlist" << endl;cout << "q - Quit" << endl << endl;cout << "Choose an option:" << endl;cin >> choice;cin.ignore();if (choice == 'q') {exit(1);}else if (choice == 'a') {cout << "\nADD SONG" << endl;cout << "Enter song's unique ID: ";cin >> id;cin.ignore();cout << "Enter song's name: ";getline(cin,sname);cout << "Enter artist's name: ";getline(cin,aname);cout << "Enter song's length (in seconds): ";cin >> length;list.AddSong(id, sname, aname, length);}else if (choice == 'd') {cout << "\nREMOVE SONG" << endl;cout << "Enter song's unique ID: ";cin >> id;list.RemoveSong(id);}else if (choice == 'c') {cout << "\nCHANGE POSITION OF SONG" << endl;cout << "Enter song's current position: ";cin >> oldPos;cout << "Enter new position for song: ";cin >> newPos;list.ChangePosition(oldPos, newPos);}else if (choice == 's') {cout << "\nOUTPUT SONGS BY SPECIFIC ARTIST" << endl;cout << "Enter artist's name: ";getline(cin, aname);list.SongsByArtist(aname);}else if (choice == 't') {cout << "\nOUTPUT TOTAL TIME OF PLAYLIST (IN SECONDS)" << endl;cout << "Total time: " << list.TotalTime() << " seconds" << endl;}else if (choice == 'o') {cout << endl << title << " - OUTPUT FULL PLAYLIST" << endl;list.PrintList();}else {cout << "Invalid menu choice! Please try again." << endl;}}}
//Leif Messinger//Finds all sets of 5 5 letter words that don't have duplicate letters in either themselves or each other.//First it reads the words in and puts them in groups of their bitmasks//After that, we recurse on each group. Before doing that, we remove the group from the set of other groups to check it against.#include <cstdio> //getchar, printf#include <cassert> //assert#include <vector>#include <set>#include <algorithm> //std::copy_if#include <iterator> //std::back_inserter#define CHECK_FOR_CRLF true#define MIN_WORDS 5#define MAX_WORDS 5#define WORD_TOO_LONG(len) (len != 5)const unsigned int charToBitmask(const char bruh){assert(bruh >= 'a' && bruh <= 'z');return (1 << (bruh - 'a'));}void printBitmask(unsigned int bitmask){char start = 'a';while(bitmask != 0){if(bitmask & 1){putchar(start);}bitmask >>= 1;++start;}}//Pointer needs to be deletedconst std::set<unsigned int>* getBitmasks(){std::set<unsigned int>* bitmasksPointer = new std::set<unsigned int>;std::set<unsigned int>& bitmasks = (*bitmasksPointer);unsigned int bitmask = 0;unsigned int wordLength = 0;bool duplicateLetters = false;for(char c = getchar(); c >= 0; c = getchar()){if(CHECK_FOR_CRLF && c == '\r'){continue;}if(c == '\n'){if(!(WORD_TOO_LONG(wordLength) || duplicateLetters)) bitmasks.insert(bitmask);bitmask = 0;wordLength = 0;duplicateLetters = false;continue;}if((bitmask & charToBitmask(c)) != 0) duplicateLetters = true;bitmask |= charToBitmask(c);++wordLength;}return bitmasksPointer;}void printBitmasks(const std::vector<unsigned int>& bitmasks){for(unsigned int bruh : bitmasks){printBitmask(bruh);putchar(','); putchar(' ');}puts("");}//Just to be clear, when I mean "word", I mean a group of words with the same letters.void recurse(std::vector<unsigned int>& oldBitmasks, std::vector<unsigned int> history, const unsigned int currentBitmask){//If there's not enough words leftif(oldBitmasks.size() + (-(history.size())) + (-MIN_WORDS) <= 0){//If there's enough wordsif(history.size() >= MIN_WORDS){//Print the listprintBitmasks(history);}return;//To make it faster, we can stop it after 5 words too}else if(history.size() >= MAX_WORDS){//Print the listprintBitmasks(history);return;}//Thin out the array with only stuff that matches the currentBitmask.std::vector<unsigned int> newBitmasks;std::copy_if(oldBitmasks.begin(), oldBitmasks.end(), std::back_inserter(newBitmasks), [¤tBitmask](unsigned int bruh){return (bruh & currentBitmask) == 0;});while(newBitmasks.size() > 0){//I know this modifies 'oldBitmasks' too. It's intentional.//This makes it so that the word is never involved in any of the child serches or any of the later searches in this while loop.const unsigned int word = newBitmasks.back(); newBitmasks.pop_back();std::vector<unsigned int> newHistory = history;newHistory.push_back(word);recurse(newBitmasks, newHistory, currentBitmask | word);}}int main(){const std::set<unsigned int>* bitmasksSet = getBitmasks();std::vector<unsigned int> bitmasks(bitmasksSet->begin(), bitmasksSet->end());delete bitmasksSet;recurse(bitmasks, std::vector<unsigned int>(), 0);return 0;}
#include <iostream>using namespace std;main{cout << "No tabbing. That's very sad :(\n";cout << "No in-editor highlighting either :(((\n";cout << "Descriptions might be niice too.";}
#include <iostream>using namespace std;/* Function: get_coeffParameters: double& coeff, int pos passed from bb_4acReturn: type is void so no return, but does ask for user to input data that establishes what a b and c are.*/void get_coeff(double& coeff, int pos) {char position;if(pos == 1) {position = 'a';} else if(pos == 2) { //a simple system to determine what coefficient the program is asking for.position = 'b';} else {position = 'c';}cout << "Enter the co-efficient" << position << ":"; //prompt to input coeffcin >> coeff; //input coeff}/* Function: bb_4acParameters: no parameters passed from main, but 3 params established in function, double a, b, c.Return: b * b - 4 * a * c*/double bb_4ac() {double a, b, c; //coefficients of a quadratic equationget_coeff(a, 1); // call function 1st timeget_coeff(b, 2); // call function 2nd timeget_coeff(c, 3); // call function 3rd timereturn b * b - 4 * a * c; //return b * b - 4 * a * c}int main() {cout << "Function to calculate the discriminant of the equation. . . " << endl;double determinate = bb_4ac(); //assign double determinate to bb_4ac functioncout << "The discriminant for given values is: " << determinate << endl; //output the determinate!}
#include "goat.h" //include goat.hvoid Goat::setBreed(string breed) {this->breed = breed;}void Goat::setWeight(float weight) {this->weight = weight;}void Goat::setName(string name) {this->name = name;}void Goat::setGender(char gender) {this->gender = gender;}void Goat::setSpayed(bool goatIsSpayed) {this->goatIsSpayed = goatIsSpayed;}void Goat::setRegistrationID(string registrationID) {this->registrationID = registrationID;}void Goat::setColor(string color) {this->color = color;}void Goat::setOtherComments(string otherComments) {this->otherComments = otherComments;}string Goat::getBreed() {return breed;}float Goat::getWeight() {return weight;}string Goat::getName() {return name;}char Goat::getGender() {return gender;}bool Goat::getSpayed() {return goatIsSpayed;}string Goat::getRegistrationID() {return registrationID;}string Goat::getColor() {return color;}string Goat::getOtherComments() {return otherComments;}Goat::Goat() {breed = "";weight = 0.0;name = "";gender = '\0';goatIsSpayed = false;registrationID = "";color = "";otherComments = "";}Goat::Goat(string goatBreed, float goatWeight, string goatName, char goatGender, bool goatSpayedStatus, string goatRegistrationID, string goatColor, string goatOtherComments) {breed = goatBreed;weight = goatWeight;name = goatName;gender = goatGender;goatIsSpayed = goatSpayedStatus;registrationID = goatRegistrationID;color = goatColor;otherComments = goatOtherComments;}Goat::~Goat() {cout << "goat destroyed" << endl;}void Goat::printinfo() {cout << "Breed: " << breed << endl << "weight: " << weight << endl << "Name: " << name << endl << "Gender: " << gender << endl << "is Spayed: ";if(goatIsSpayed) { //here I do a logical test on boolean goatIsSpayed. if true cout << true else cout << falsecout << "True";} else {cout << "False";}cout << endl << "Registration ID: " << registrationID << endl << "Color Description: " << color << endl << "Other Comments: " << otherComments << endl << endl;}
#include <iostream>#include <cstring>int main(int argc, char** argv){//With decimalif(strstr(argv[1], ".") != nullptr){int i = 0;//Skip i to first non 0 digitwhile(argv[1][i] < '1' || argv[1][i] > '9') ++i;//If digit comes before decimalif((argv[1] + i) < strstr(argv[1], ".")){ //Good example of pointer arithmeticstd::cout << strlen(argv[1] + i) - 1 << std::endl; //Another good example}else{//If digit is after decimalstd::cout << strlen(argv[1] + i) << std::endl;}}else{//Without decimalint m = 0;int i = 0;while(argv[1][i] < '1' || argv[1][i] > '9') ++i; //In case of some number like 0045for(; argv[1][i] != '\0'; ++i){if(argv[1][i] >= '1' && argv[1][i] <= '9') m = i + 1;}std::cout << m << std::endl;}return 0;}