C++ Primer Plus_编程练习_第2章开始学习C++

朴灿烈づ我的快乐病毒、 2022-11-10 10:58 83阅读 0赞

### 2.7 编程练习 100 ###

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**2.7.1**

#include<iostream>
    using namespace std;
    int main()
    {
    	cout << "姓名：神迹小卒\n"
    		<< "地址：四川成都";
    	return 0;
    }
    /*>>
    姓名：神迹小卒
    地址：四川成都
    */

**2.7.2**

#include<iostream>
    using namespace std;
    int main()
    {
        double long_distance;
    
        cout << "请输入一个以long为单位的距离: ";
        cin >> long_distance;
    
        cout << long_distance << " long ";
        cout << "等于 ";
        long_distance *= 220.0;
        cout << long_distance << " 码" << endl;
    
        return 0;
    }

**2.7.3**

#include<iostream>
    using namespace std;
    
    void print1(void);
    void print2(void);
    
    int main()
    {
    	print1();
    	print1();
    	print2();
    	print2();
    	return 0;
    }
    
    void print1(void)
    {
    	cout << "Three blind mice" << endl;
    }
    void print2(void)
    {
    	cout << "See how they run" << endl;
    }
    /*>>
    Three blind mice
    Three blind mice
    See how they run
    See how they run
    
    */

**2.7.4**

#include<iostream>
    using namespace std;
    
    int main()
    {
    	int age;
    	cout << "Enter your age:";
    	cin >> age;
    	cout << "your months are:" << age * 12;
    	return 0;
    }
    /*>>
    Enter your age:29
    your months are:348
    */

**2.7.5**

#include <iostream>
    using namespace std;
    
    double temperature(double temp);
    
    int main()
    {
        double celsius;
    
        cout << "Please enter a Celsius value: ";
        cin >> celsius;
        cout << celsius << " degrees Celsius is ";
        cout << temperature(celsius);
        cout << " degrees Fahrenheit." << endl;
    
        return 0;
    }
    
    double temperature(double temp)
    {
        return 1.8 * temp + 32.0;
    }

**2.7.6**

#include <iostream>
    using namespace std;
    
    double transform(double temp);
    
    int main()
    {
        double light_years;
    
        cout << "Enter the number of light years: ";
        cin >> light_years;
        cout << light_years << " light years = ";
        cout << transform(light_years);
        cout << " astronomical units." << endl;
    
        return 0;
    }
    
    double transform(double temp)
    {
        return temp * 63240.0;
    }

**2.7.7**

#include <iostream>
    using namespace std;
    
    void show_time(int hour, int minute);
    
    int main()
    {
        int hour, minute;
    
        cout << "Enter the number of hours: ";
        cin >> hour;
        cout << "Enter the number of minutes: ";
        cin >> minute;
        show_time(hour, minute);
    
        return 0;
    }
    
    void show_time(int hour, int minute)
    {
        cout << "Time: " << hour << ":" << minute << endl;
        return;
    }

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