본문 바로가기
C++/명품 C++ Programming

[C++/명품 C++ Programming]명품 C++ 3장 연습문제 - 실습 문제

by starfish22 2021. 12. 6.
728x90

1.

#include <iostream>
using namespace std;

class Tower{
    int meter;
public:
    Tower() : Tower(1) {}
    Tower(int m) : meter(m) {}
    int getHeight() { return meter; }
};

int main()
{
    Tower myTower;
    Tower seoulTower(100);
    cout << "높이는 " << myTower.getHeight() << "미터" << endl;
    cout << "높이는 " << seoulTower.getHeight() << "미터" << endl;
}

2.

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

class Date{
    int year, mon, day;
public:
    Date(int y, int m, int d) : year(y), mon(m), day(d) {}
    Date(string s)
    {
        char c[101];
        strcpy(c, s.c_str());
        year = stoi(strtok(c, "/"));
        mon = stoi(strtok(NULL, "/"));
        day = stoi(strtok(NULL, "/"));
    }
    void show()
    {
        cout << year << "년" << mon << "월" << day << "일" << endl;
    }
    int getYear() { return year; }
    int getMonth() { return mon; }
    int getDay() { return day; }
};

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

3.

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

class Account{
    char name[20];
    int id, balance;

public:
    char *getOwner() { return name; }
    void deposit(int n) { balance += n; }
    int withdraw(int n){
        balance -= n;
        return balance;
    }
    int inquiry() { return balance; }

    Account(const char *s, int n, int m) : id(n), balance(m)
    {
        strcpy(name, s);
    }
};

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;
}

4.

#include <iostream>
using namespace std;

class CoffeeMachine
{
    int coffee, water, sugar;

public:
    CoffeeMachine(int co, int w, int s) : coffee(co), water(w), sugar(s) {}

    void drinkEspresso(){
        coffee--;
        water--;
    }
    void drinkAmericano(){
        coffee--;
        water -= 2;
    }
    void drinkSugarCoffee(){
        coffee--;
        water -= 2;
        sugar--;
    }
    void show(){
        cout << "커피 머신 상태, 커피:" << coffee << "\t물:" << water << "\t설탕:" << sugar << endl;
    }
    void fill(){
        coffee = 10;
        water = 10;
        sugar = 10;
    }
};

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

5.

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

class Random{
public:
    Random() { srand((unsigned)time(0)); }
    int next(){
        return rand();
    }
    int nextInRange(int a, int b){
        int n = rand() % (b - a + 1);
        return n + a;
    }
};

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;
}

6.

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

class EvenRandom{
public:
    EvenRandom() { srand((unsigned)time(0)); }
    int next(){
        int n = rand();
        if(n % 2 == 1 && n + 1 < RAND_MAX) n++;
        return n;
    }
    int nextInRange(int a, int b){
        int n = rand() % (b - a + 1) + a;
        if(n % 2 == 1 && n + 1 <= b) n++;
        return n;
    }
};

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

7.

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

class SelectableRandom{
public:
    SelectableRandom() { srand((unsigned)time(0)); }
    int evenRandom(){
        int n = rand();
        if(n % 2 == 1 && n + 1 < RAND_MAX) n++;
        return n;
    }
    int oddRandom(int a, int b){
        int n = rand() % (b - a + 1) + a;
        if(n % 2 == 0 && n + 1 <= b) n++;
        return n;
    }
};

int main()
{
    SelectableRandom r;
    cout << "-- 0에서 " << RAND_MAX << "까지의 짝수 랜덤 정수 10개 --" << endl;
    for (int i = 0; i < 10; i++){
        int n = r.evenRandom();
        cout << n << ' ';
    }
    cout << endl << endl << "-- 2에서 " << "9 까지의 랜덤 홀수 정수 10개 --" << endl;
    for (int i = 0; i < 10; i++){
        int n = r.oddRandom(2, 9);
        cout << n << ' ';
    }
    cout << endl;
}

8.

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

class Integer{
    int num;
public:
    Integer(int n) : num(n) {}
    Integer(const char *str) : num(stoi(str)) {}

    int get() { return num; }
    void set(int n) { num = n; }
    bool isEven(){
        if (num % 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();
}

9.

#include <iostream>
using namespace std;

class Oval{
    int width, height;
public:
    Oval(int a, int b);
    Oval();
    ~Oval();
    int getWidth();
    int getHeight();
    void set(int w, int h);
    void show();
};

Oval::Oval(int a, int b) : width(a), height(b) {}

Oval::Oval() : width(1), height(1) {}

Oval::~Oval(){
    cout<<"Oval 소멸 : width = "<<width<<", height = "<<height<<endl;
}

int Oval::getWidth(){ return width; }

int Oval::getHeight(){ return height; }

void Oval::set(int w, int h){
    width=w;
    height=h;
}

void Oval::show(){
    cout<<"width = "<<width<<", height = "<<height<<endl;
}

10.

(1)

#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();
};

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

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

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

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

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

    int num1, num2;
    char str;

    while (1)
    {
        cout << "두 정수와 연산자를 입력하세요>>";
        cin >> num1 >> num2 >> str;
        switch (str)
        {
        case '+':
            a.setValue(num1, num2);
            cout << a.calculate() << endl;
            break;
        case '-':
            s.setValue(num1, num2);
            cout << s.calculate() << endl;
            break;
        case '*':
            m.setValue(num1, num2);
            cout << m.calculate() << endl;
            break;
        case '/':
            d.setValue(num1, num2);
            cout << d.calculate() << endl;
            break;
        }
    }
}

(2)

Calculator.h

#pragma once

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();
};

Calculator.cpp

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

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

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

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

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

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

    int num1, num2;
    char str;

    while (1)
    {
        cout << "두 정수와 연산자를 입력하세요>>";
        cin >> num1 >> num2 >> str;
        switch (str)
        {
        case '+':
            a.setValue(num1, num2);
            cout << a.calculate() << endl;
            break;
        case '-':
            s.setValue(num1, num2);
            cout << s.calculate() << endl;
            break;
        case '*':
            m.setValue(num1, num2);
            cout << m.calculate() << endl;
            break;
        case '/':
            d.setValue(num1, num2);
            cout << d.calculate() << endl;
            break;
        }
    }
}

11.

Box.h

#pragma once

class Box {
	int width, height;
	char fill;
public:
	Box(int w, int h);
	void setFill(char f);
	void setSize(int w, int h);
	void draw();
};

Box.cpp

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

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;
	}
}

main.cpp

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

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

12.

Ram.h

#pragma once

class Ram{
	char mem[100 * 1024];
	int size;

public:
	Ram();
	~Ram();
	char read(int address);
	void write(int address, char value);
};

Ram.cpp

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

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

Ram::~Ram()
{
	cout << "메모리 제거됨" << endl;
}

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

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

main.cpp

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

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;
}
728x90

'C++ > 명품 C++ Programming' 카테고리의 다른 글

명품 C++ 5장 연습문제 - 실습 문제  (0) 2022.01.10
명품 C++ 5장 연습문제 - 이론 문제  (5) 2022.01.08
명품 C++ 4장 연습문제 - 실습 문제  (0) 2022.01.03
명품 C++ 4장 연습문제 - 이론 문제  (0) 2022.01.01
명품 C++ 3장 연습문제 - 이론 문제  (0) 2021.12.06

관련글

댓글

티스토리툴바