명품 C++ 프로그래밍 3장 연습문제

Written by 박민영 on Mar 8th, 2022 ・ Views ・ Report Post

박민영 Visit User Profile

3-1

#include <iostream>
using namespace std;

class Tower
{
public:
	Tower();
	Tower(int input);
	int getHeight();
private:
	int meter;
};

int main()
{
	Tower myTower;
	Tower seoulTower(100);
	cout << "높이는 " << myTower.getHeight() << "미터" << endl;
	cout << "높이는 " << seoulTower.getHeight() << "미터" << endl;
}
Tower::Tower()
{
	meter = 1;
}
Tower::Tower(int input)
{
	meter = input;
}
int Tower::getHeight()
{
	return meter;
}

3-2

#include <iostream>
#include <string>
using namespace std;

class Date
{
public:
	Date(int year, int month, int day);
	Date(string s);
	void show();
	int getYear();
	int getMonth();
	int getDay();
private:
	int y;
	int m;
	int d;
};

int main()
{
	Date birth(2014, 3, 20);
		Date independenceDay("1945/8/15");
		independenceDay.show();
		cout << birth.getYear() << ',' << birth.getMonth() << ',' << birth.getDay() << endl;
}

Date::Date(int year, int month, int day)
{
	y = year;
	m = month;
	d = day;
}
Date::Date(string s)
{
	int ind;
	y = stoi(s);
	ind = s.find('/');
	m = stoi(s.substr(ind + 1));

	ind = s.find('/', ind + 1);
	d = stoi(s.substr(ind + 1));

}
int Date::getYear()
{
	return y;
}
int Date::getMonth()
{
	return m;
}
int Date::getDay()
{
	return d;
}
void Date::show()
{
	cout << y << "년" << m << "월" << d << "일" << endl;
}

3-3

#include <iostream>
using namespace std;

class Account
{
public:
	Account(string name, int id, int balance);
	void deposit(int input);
	string getOwner();
	int inquiry();
	int withdraw(int withdrawal);
private:
	int total=0;
	string n;
	int output;
};

int main()
{
	Account a("kitae", 1, 5000);
	a.deposit(50000);
	cout << a.getOwner() << "의 잔액은 " << a.inquiry() << endl;
	int money = a.withdraw(20000);
	cout << a.getOwner() << "의 잔액은 " << a.inquiry() << endl;
}

Account::Account(string name, int id, int balance)
{
	n = name;
	total += balance;
}

void Account::deposit(int input)
{
	total+= input;
}

string Account::getOwner()
{
	return n;
}

int Account::inquiry()
{
	return total;
}

int Account::withdraw(int withdrawal)
{
	output=withdrawal;
	total -= output;
	return output;
}

3-4

#include <iostream>
using namespace std;

class CoffeeMachine
{
public:
	CoffeeMachine(int c, int w, int s);
	void drinkEspresso();
	void drinkAmericano();
	void drinkSugarCoffee();
	void show();
	void fill();
private:
	int coffee;
	int water;
	int sugar;
};

int main()
{
	CoffeeMachine java(5, 10, 3);
	java.drinkEspresso();
	java.show();
	java.drinkAmericano();
	java.show();
	java.drinkSugarCoffee();
	java.show();
	java.fill();
	java.show();
}

CoffeeMachine::CoffeeMachine(int c, int w, int s)
{
	coffee = c;
	water = w;
	sugar = s;
}

void CoffeeMachine::drinkEspresso()
{
	coffee--;
	water--;
}

void CoffeeMachine::drinkAmericano()
{
	coffee--;
	water -= 2;
}

void CoffeeMachine::drinkSugarCoffee()
{
	coffee--;
	water -= 2;
	sugar--;
}

void CoffeeMachine::show()
{
	cout << "커피 머신 상태, " << "커피:" << coffee << " 물:" << water << " 설탕:" << sugar << endl;
}
void CoffeeMachine::fill()
{
	coffee = 10;
	water = 10;
	sugar = 10;
}

3-5

#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

class Random
{
	int seed = 0;
public:
	int next();
	int nextInRange(int start, int end);
};

int main()
{
	Random r;
	cout << "--0에서 " << RAND_MAX << "까지의 랜덤 정수 10개--" << endl;
	for (int i = 0; i < 10; i++)
	{
		int n = r.next();
		cout << n << ' ';
	}
	cout << endl << endl << "-- 2에서 " << "4 까지의 랜덤 정수 10개 --" << endl;
	for (int i = 0; i < 10; i++)
	{
		int n = r.nextInRange(2, 4);
		cout << n << ' ';
	}
	cout << endl;
}

// Random::Random()


int Random::next()
{
	srand((unsigned)time(0));
	int n = rand();
	return n;
}

int Random::nextInRange(int start, int end)
{
	srand((unsigned)time(0));
	int n = rand() % (end - start + 1) + start;
	return n;
}

3-6

#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

class EvenRandom
{
	int seed = 0;
public:
	int next();
	int nextInRange(int start, int end);
};

int EvenRandom::next()
{
	srand((unsigned)time(0));
	int n;
	do
	{
		n = rand();
	} while (n % 2 == 1);
	return n;
}


int EvenRandom::nextInRange(int start, int end)
{
	srand((unsigned)time(0));
	int n;
	do
	{
		n = rand() % (end - start + 1) + start;
	} while (n % 2 == 1);
	return n;
}

int main()
{
	EvenRandom r;
	cout << "--에서 " << RAND_MAX << "까지의 정수 10개--" << endl;
	for (int i = 0; i < 10; i++)
	{
		int n = r.next();
		cout << n << ' ';
	}
	cout << endl << endl << "--2에서 4까지의 랜덤 정수 10개--" << endl;
	for (int i = 0; i < 10; i++)
	{
		int n = r.nextInRange(2, 4);
		cout << n << ' ';
	}
	cout << endl;
	return 0;
}

3-7

#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

class SelectableRandom {
	int seed = 0;
public:
	int nextEven();
	int nextOdd();
	int nextEvenInRange(int start, int end);
	int nextOddInRange(int start, int end);
};

int SelectableRandom::nextEven() {
	srand((unsigned int)time(0));
	int n;
	do {
		n = rand();
	} while (n % 2 == 1);
	return n;
}

int SelectableRandom::nextOdd() {
	srand((unsigned int)time(0));
	int n;
	do {
		n = rand();
	} while (n % 2 == 0);
	return n;
}

int SelectableRandom::nextEvenInRange(int start, int end) {
	srand((unsigned int)time(0));
	int n;
	do {
		n = rand() % (end - start + 1) + start;
	} while (n % 2 == 1);
	return n;
}

int SelectableRandom::nextOddInRange(int start, int end) {
	srand((unsigned int)time(0));
	int n;
	do {
		n = rand() % (end - start + 1) + start;
	} while (n % 2 == 0);
	return n;
}
int main() {
	SelectableRandom r;
	cout << "-- 0에서 " << RAND_MAX << "까지의 정수 10개--" << endl;
	for (int i = 0; i < 10; i++) {
		int n = r.nextEven();
		cout << n << ' ';
	}
	cout << endl << endl << "-- 2에서 9까지의 랜덤 홀수 정수 10개 --" << endl;
	for (int i = 0; i < 10; i++) {
		int n = r.nextOddInRange(2, 9);
		cout << n << ' ';
	}
	cout << endl;
	return 0;
}

3-8

#include <iostream>
#include <string>
using namespace std;

class Integer
{
public:
	int r;
	Integer(int num) { r = num; };
	int get() { return r; };
	void set(int num) { r = num; };
	Integer(string s) { r = stoi(s); };
	bool isEven() {
		if (r % 2 == 0)
			return true;
		else
			return false;
	};
};

int main()
{
	Integer n(30);
	cout << n.get() << ' ';
	n.set(50);
	cout << n.get() << ' ';

	Integer m("300");
	cout << m.get() << ' ';
	cout << m.isEven();

	return 0;
}

3-9

🤩 Our Amazing Sponsors 👇
DigitalOcean View Website
DigitalOcean offers a simple and reliable cloud hosting solution that enables developers to get their website or application up and running quickly.
Laravel News View Website
Laravel News keeps you up to date with everything Laravel. Everything from framework news to new community packages, Laravel tutorials, and more.
Genesis View Website
A Laravel Starter Kit that includes Authentication, User Dashboard, Edit Profile, and a set of UI Components. 
#include <iostream>
using namespace std;

class Oval
{
	int width, height;
public:
	Oval(int a, int b) { width = a; height = b; };
	Oval() { width = 1; height = 1; };
	~Oval() { cout <<"Oval 소멸 : width = "<< width << ", height = "<< height << endl; }
	int getWidth() { return width; };
	int getHeight() { return height; };
	void set(int w, int h) { width = w; height = h; };
	void show() { cout << "width: " << width << "," << "height: " << height; };
};

int main()
{
	Oval a, b(3,4);
	a.set(10, 20);
	a.show();
	cout << b.getWidth() << "," << b.getHeight() << endl;
}

3-10 (1)main

#include <iostream>
using namespace std;
#include "Calculate.h"

int main()
{
	Add a;
	Sub s;
	Mul m;
	Div d;



	while (true)
	{
		cout << "두 정수와 연산자를 입력하세요>>";
		int x, y;
		char op;
		cin >> x >> y >> op;
		if (op == '*')
			cout << m.calculate() << endl;
		else if (op == '/')
			cout << d.calculate() << endl;
		else if (op == '+')
			cout << a.calculate() << endl;
		else if (op == '-')
			cout << s.calculate() << endl;
		else
		{
		}

	}

	return 0;
}

(2)

#pragma once
#ifndef CALCULATOR_H
#define CALCULATOR_H
#include <iostream>
using namespace std;

class  Add
{
	int a, b;
public:
	void setValue(int x, int y);
	int calculate();
};

class Sub
{
	int a, b;
public:
	void setValue(int x, int y);
	int calculate();
};

class Mul
{
	int a, b;
public:
	void setValue(int x, int y);
	int calculate();
};

class Div
{
	int a, b;
public:
	void setValue(int x, int y);
	int calculate();
};

#endif

(3)

#include <iostream>
using namespace std;

#include "Calculate.h"



void Add::setValue(int x, int y)
{
	a = x;
	b = y;
}

void Sub::setValue(int x, int y)
{
	a = x;
	b = y;
}

void Mul::setValue(int x, int y)
{
	a = x;
	b = y;
}

void Div::setValue(int x, int y)
{
	a = x;
	b = y;
}

int Add::calculate()
{
	return a + b;
}

int Sub::calculate()
{
	return a - b;
}

int Mul::calculate()
{
	return a * b;
}

int Div::calculate()
{
	return a / b;
}

3-11 (1)

#include <iostream>
using namespace std;

#include "Calculate.h"



void Add::setValue(int x, int y)
{
	a = x;
	b = y;
}

void Sub::setValue(int x, int y)
{
	a = x;
	b = y;
}

void Mul::setValue(int x, int y)
{
	a = x;
	b = y;
}

void Div::setValue(int x, int y)
{
	a = x;
	b = y;
}

int Add::calculate()
{
	return a + b;
}

int Sub::calculate()
{
	return a - b;
}

int Mul::calculate()
{
	return a * b;
}

int Div::calculate()
{
	return a / b;
}

(2)

#include <iostream>
using namespace std;

#include "Box.h"

Box::Box(int w,int h)
{
	setSize(w, h);
	fill = '*';
}

void Box::setFill(char f)
{
	fill = f;
}

void Box::setSize(int w, int h)
{
	width = w;
	height = h;
}

void Box::draw()
{
	for (int n = 0; n < height; n++)
	{
		for (int m = 0; m < width; m++)
			cout << fill;
		cout << endl;
	}
}

(3)

#include <iostream>
using namespace std;
#include "Box.h"

int main()
{
	Box b(10, 2);
	b.draw();
	cout << endl;
	b.setSize(7, 4);
	b.setFill('^');
	b.draw();
	return 0;
}

3-12 (1)

#pragma once
#ifndef RAM_H
#define RAM_H

class Ram
{
	char mem[100 * 1024];
	int size;
public:
	Ram();
	~Ram();
		char read(int address);
		void write(int address, char value);

};

#endif

(2)

#include <iostream>
using namespace std;
#include "Ram.h"

Ram::Ram()
{
	for (int i = 0; i < 100 * 1024; i++)
	{
		mem[i] = 0;
	}
	size = 100 * 1024;
}

Ram::~Ram()
{
	cout << "메모리 제거됨\n";
}

char Ram::read(int address)
{
	return mem[address];
}

void Ram::write(int address, char value)
{
	mem[address] = value;
}

(3)

#include <iostream>
using namespace std;
#include "Ram.h"

int main()
{
	Ram ram;
	ram.write(100, 20);
	ram.write(101, 30);
	char res = ram.read(100) + ram.read(101);
	ram.write(102,res);
	cout << "102 번지의 값 = " << (int)ram.read(102) << endl;
}

Comments (0)