【第二章】C++ Primer plus 的編程練習題(選取部分)

/***********************************
	2017年9月23日13:12:16
	Athor：xiyuan255
	Course：C++
	Contain：myfirst.cpp
	Reference: C++ Primer plus
	說明：C++ Primer plus第二章的練習題(選取部分) 
	     【 P35 】
*************************************/
// review2.cpp -- C++ Primer plus 第二章練習題

#include <iostream>

void ageToMonth(void);
void temperatureFunc(void);
void timeFunc(void);

using namespace std;

int main(void)
{
    //ageToMonth(); // test 1
	//temperatureFunc(); // test 2
	timeFunc(); // test 3
	return 0;
}

void ageToMonth(void)
{
	cout << "Enter your age: ";
	int age;
	cin >> age;
	cout << age << " age = " << (age*12) << " month." << endl;
}
/**
輸出結果：
	Enter your age: 29
	29 age = 348 month.
*/


int celsiusToFahrenheit(int celsius)
{
	return (int)(celsius * 1.8 + 32.0);
}

void temperatureFunc(void)
{
	cout << "Please enter a Celsius value: ";
	int celsius;
	cin >> celsius;
	int fahrenheit;
	fahrenheit = celsiusToFahrenheit(celsius);
	cout << celsius << " degrees Celsius is " << fahrenheit << " degrees Fahrenheit.\n";
}
/**
輸出結果：
	Please enter a Celsius value: 20
	20 degrees Celsius is 68 degrees Fahrenheit.
*/


void hoursAndMinutesToTime(int hours, int minutes)
{
	cout << "Time: " << hours << ":" << minutes << endl;
}

void timeFunc(void)
{
	cout << "Enter the number of hours: ";
	int hours;
	cin >> hours;
	cout << "Enter the number of minutes: ";
	int minutes;
	cin >> minutes;
	hoursAndMinutesToTime(hours, minutes);
}
/**
輸出結果：
	Enter the number of hours: 9
	Enter the number of minutes: 28
	Time: 9:28
*/