Starting Out with C++ from Control Structures to Objects (9th Edition)
9th Edition
ISBN: 9780134498379
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 17.3, Problem 17.11CP
Write a statement that defines an empty
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#include <iostream>//#include <vector>
using namespace std;
class Vec {public:Vec() {sz = 0;cap = 1;p_arr = new int[cap];} int size(){return this->sz;}int capacity(){return this->cap;}void reserve( int n ){// TODO:// (0) check the n should be > size, otherwise// ignore this action.if ( n > sz ){// (1) create a new int array which size is n// and get its address//cout << "Adress:"<< &n << endl;int *newarr = new int [n];//cout << "Address: " << newarr << endl; // location
// (2) use for loop to copy the old array to the// new arrayfor(int i = 0; i < sz; i++){newarr[i] = p_arr[i];}// (3) update the variable to the new addressthis->cap=n;
// (4) delete old arraydelete[] newarr;}}void push_back( int v ){// TODO:if ( sz == cap ){ cap *= 2; reserve(cap);}p_arr[sz++] = v;// complete others}int at(int idx){return this->p_arr[idx];}private://vector<int> arr;int *p_arr;int sz = 0;int cap = 0; };
int main(){Vec v;…
#include <string>#include <iostream>#include <vector>class Snack{public:Snack(std::string, float, bool);int set_price(float);void set_expired(bool);void set_name(std::string);std::string name() const{return name_;}float price() const{return price_;}bool expired() const{return expr_;}int how_many_for_ten();private:std::string name_;float price_;bool expr_;};void SortByPrice(std::vector<Snack>&,bool);
Task:
Implement a function working with Snack objects that are stored using a vector. It has the following signature: void SortByPrice(std::vector<Snack>& list_ref, bool asc).
This function should sort the vector list_ref based on the price_ of the Snacks. The sorting should be done in the following order:
Ascending if asc is true
Descending if asc is false.
In both cases if variables have the same value for price_, the sorting should be done based on the name_ in ascending order.
#include <string>#include <iostream>#include <vector>class Snack{public:Snack(std::string, float, bool);int set_price(float);void set_expired(bool);void set_name(std::string);std::string name() const{return name_;}float price() const{return price_;}bool expired() const{return expr_;}int how_many_for_ten();private:std::string name_;float price_;bool expr_;};void SortByPrice(std::vector<Snack>&,bool);
Task:
Define the public function int Snack::set_price(float price) :
If the value passed by price is smaller than 0 the function should return -2.
If the value of price is greater or equal to 0, proceed as follows:
If the value passed by price is smaller than the current value of price_, the function should assign price to price_ and return -1.
If the value passed by price is larger than the current value of price_, the function should assign price to price_ and return 1.
If price is equal to price_, the function should assign price to price_ and return…
Chapter 17 Solutions
Starting Out with C++ from Control Structures to Objects (9th Edition)
Ch. 17.2 - Prob. 17.1CPCh. 17.2 - Prob. 17.2CPCh. 17.2 - Prob. 17.3CPCh. 17.2 - Suppose you are writing a program that uses the...Ch. 17.2 - Prob. 17.5CPCh. 17.2 - Prob. 17.6CPCh. 17.2 - What does a containers begin() and end() member...Ch. 17.2 - Prob. 17.8CPCh. 17.2 - Prob. 17.9CPCh. 17.2 - Prob. 17.10CP
Ch. 17.3 - Write a statement that defines an empty vector...Ch. 17.3 - Prob. 17.12CPCh. 17.3 - Prob. 17.13CPCh. 17.3 - Write a statement that defines a vector object...Ch. 17.3 - What happens when you use an invalid index with...Ch. 17.3 - Prob. 17.16CPCh. 17.3 - If your program will be added a lot of objects to...Ch. 17.3 - Prob. 17.18CPCh. 17.3 - Prob. 17.19CPCh. 17.4 - Prob. 17.20CPCh. 17.4 - Write a statement that defines a nap named myMap....Ch. 17.4 - Prob. 17.22CPCh. 17.4 - Prob. 17.23CPCh. 17.4 - Prob. 17.24CPCh. 17.4 - Prob. 17.25CPCh. 17.4 - Prob. 17.26CPCh. 17.4 - Prob. 17.27CPCh. 17.5 - What are two differences between a set and a...Ch. 17.5 - Write a statement that defines an empty set object...Ch. 17.5 - Prob. 17.30CPCh. 17.5 - Prob. 17.31CPCh. 17.5 - Prob. 17.32CPCh. 17.5 - If you store objects of a class that you have...Ch. 17.5 - Prob. 17.34CPCh. 17.5 - Prob. 17.35CPCh. 17.6 - Prob. 17.36CPCh. 17.6 - What value will be stored in v[0] after the...Ch. 17.6 - Prob. 17.38CPCh. 17.6 - Prob. 17.39CPCh. 17.6 - Prob. 17.40CPCh. 17.6 - Prob. 17.41CPCh. 17.6 - Prob. 17.42CPCh. 17.7 - Prob. 17.43CPCh. 17.7 - Which operator must be overloaded in a class...Ch. 17.7 - Prob. 17.45CPCh. 17.7 - What is a predicate?Ch. 17.7 - Prob. 17.47CPCh. 17.7 - Prob. 17.48CPCh. 17.7 - Prob. 17.49CPCh. 17 - Prob. 1RQECh. 17 - Prob. 2RQECh. 17 - If you want to store objects of a class that you...Ch. 17 - If you want to store objects of a class that you...Ch. 17 - Prob. 5RQECh. 17 - Prob. 6RQECh. 17 - Prob. 7RQECh. 17 - If you want to store objects of a class that you...Ch. 17 - Prob. 9RQECh. 17 - Prob. 10RQECh. 17 - How does the behavior of the equal_range() member...Ch. 17 - Prob. 12RQECh. 17 - When using one of the STL algorithm function...Ch. 17 - You have written a class, and you plan to store...Ch. 17 - Prob. 15RQECh. 17 - Prob. 16RQECh. 17 - Prob. 17RQECh. 17 - Prob. 18RQECh. 17 - Prob. 19RQECh. 17 - Prob. 20RQECh. 17 - Prob. 21RQECh. 17 - A(n) ___________ container stores its data in a...Ch. 17 - _____________ are pointer-like objects used to...Ch. 17 - Prob. 24RQECh. 17 - Prob. 25RQECh. 17 - The _____ class is an associative container that...Ch. 17 - Prob. 27RQECh. 17 - Prob. 28RQECh. 17 - A _______ object is an object that can be called,...Ch. 17 - A _________ is a function or function object that...Ch. 17 - A ____________ is a predicate that takes one...Ch. 17 - A __________ is a predicate that takes two...Ch. 17 - A __________ is a compact way of creating a...Ch. 17 - T F The array class is a fixed-size container.Ch. 17 - T F The vector class is a fixed-size container.Ch. 17 - T F You use the operator to dereference an...Ch. 17 - T F You can use the ++ operator to increment an...Ch. 17 - Prob. 38RQECh. 17 - Prob. 39RQECh. 17 - T F You do not have to declare the size of a...Ch. 17 - T F A vector uses an array internally to store its...Ch. 17 - Prob. 42RQECh. 17 - T F You can store duplicate keys in a map...Ch. 17 - T F The multimap classs erase() member function...Ch. 17 - Prob. 45RQECh. 17 - Prob. 46RQECh. 17 - Prob. 47RQECh. 17 - Prob. 48RQECh. 17 - T F If two iterators denote a range of elements...Ch. 17 - T F You must sort a range of elements before...Ch. 17 - T F Any class that will be used to create function...Ch. 17 - T F Writing a lambda expression usually requires...Ch. 17 - T F You can assign a lambda expression to a...Ch. 17 - Prob. 54RQECh. 17 - Write a statement that defines an iterator that...Ch. 17 - Prob. 56RQECh. 17 - The following statement defines a vector of ints...Ch. 17 - Prob. 58RQECh. 17 - Prob. 59RQECh. 17 - The following code defines a vector and an...Ch. 17 - The following statement defines a vector of ints...Ch. 17 - Prob. 62RQECh. 17 - Prob. 63RQECh. 17 - Prob. 64RQECh. 17 - Look at the following vector definition: vectorint...Ch. 17 - Write a declaration for a class named Display. The...Ch. 17 - Write code that docs the following: Uses a lambda...Ch. 17 - // This code has an error. arrayint, 5 a; a[5] =...Ch. 17 - // This code has an error. vectorstring strv =...Ch. 17 - // This code has an error. vectorint numbers(10);...Ch. 17 - // This code has an error. vectorint numbers ={1,...Ch. 17 - Prob. 72RQECh. 17 - Prob. 73RQECh. 17 - // This code has an error. vectorint v = {6, 5, 4,...Ch. 17 - // This code has an error. auto sum = ()[int a,...Ch. 17 - Unique Words Write a program that opens a...Ch. 17 - Course Information Write a program that creates a...Ch. 17 - Prob. 3PCCh. 17 - File Encryption and Decryption Write a program...Ch. 17 - Prob. 5PCCh. 17 - Prob. 6PCCh. 17 - Prob. 7PCCh. 17 - Prob. 8PC
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- snack.h #include <string>#include <iostream>#include <vector>class Snack{public:Snack(std::string, float, bool);int set_price(float);void set_expired(bool);void set_name(std::string);std::string name() const{return name_;}float price() const{return price_;}bool expired() const{return expr_;}int how_many_for_ten();private:std::string name_;float price_;bool expr_;};void SortByPrice(std::vector<Snack>&,bool); main.cpp #include <iostream>using namespace std; #include "snack.h" int main(){ Snack snicker=Snack("Snickers",2.0,false); std::cout<<snicker.name()<<" "<<snicker.price()<<" "<<snicker.expired()<<std::endl; Snack twix=Snack("Twix",3.0,false); std::cout<<twix.name()<<" "<<twix.price()<<" "<<twix.expired()<<std::endl; Snack mars=Snack("Mars",1.5,false); std::cout<<mars.name()<<" "<<mars.price()<<" "<<mars.expired()<<std::endl;…arrow_forward#include <iostream> #include <iomanip> #include <string> #include <vector> using namespace std; class Movie { private: string title = ""; int year = 0; public: void set_title(string title_param); string get_title() const; // "const" safeguards class variable changes within function string get_title_upper() const; void set_year(int year_param); int get_year() const; }; // NOTICE: Class declaration ends with semicolon! void Movie::set_title(string title_param) { title = title_param; } string Movie::get_title() const { return title; } string Movie::get_title_upper() const { string title_upper; for (char c : title) { title_upper.push_back(toupper(c)); } return title_upper; } void Movie::set_year(int year_param) { year = year_param; } int Movie::get_year() const { return year; } int main() { cout << "The Movie List program\n\n"…arrow_forward#include <iostream> #include <iomanip> #include <string> #include <vector> using namespace std; class Movie { private: string title = ""; int year = 0; public: void set_title(string title_param); string get_title() const; // "const" safeguards class variable changes within function string get_title_upper() const; void set_year(int year_param); int get_year() const; }; // NOTICE: Class declaration ends with semicolon! void Movie::set_title(string title_param) { title = title_param; } string Movie::get_title() const { return title; } string Movie::get_title_upper() const { string title_upper; for (char c : title) { title_upper.push_back(toupper(c)); } return title_upper; } void Movie::set_year(int year_param) { year = year_param; } int Movie::get_year() const { return year; } int main() { cout << "The Movie List program\n\n"…arrow_forward
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