[C++知识库] c++ primer plus 第二章课后习题

开发: C++知识库 Java知识库 JavaScript Python PHP知识库人工智能区块链大数据移动开发嵌入式开发工具数据结构与算法开发测试游戏开发网络协议系统运维
教程: HTML教程 CSS教程 JavaScript教程 Go语言教程 JQuery教程 VUE教程 VUE3教程 Bootstrap教程 SQL数据库教程 C语言教程 C++教程 Java教程 Python教程 Python3教程 C#教程
数码: 电脑笔记本显卡显示器固态硬盘硬盘耳机手机 iphone vivo oppo 小米华为单反装机图拉丁

-> C++知识库 -> c++ primer plus 第二章课后习题 -> 正文阅读

[C++知识库]c++ primer plus 第二章课后习题

1.编写一个程序，它显示您的姓名和年龄
自己写的

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

int main() {
	
	char str[]="";
	cout << "请输入您的姓名：" << endl;
	cin >> str;
	cout << "您的姓名是 " << str << endl;
	

	int age;
	cout << "请输入您的年龄" << endl;
	cin >> age;
	cout << "您的年龄是 " << age << endl;
	system("pause");

}

网上的参考

#include <iostream>
using namespace std;

int main()
{
    cout << "My name is C++ Primer Plus." << endl;
    cout << "My address is in library." << endl;

    return 0;
}

2.编写一个c++程序，它要求用户输入一个以long为单位的距离，然后将他转换为码（一long等于220码。）
自己写的

#include <iostream>
using namespace std;

int main()
{
	double Distance;
	cout << "请输入距离：（单位long）" << endl;
	cin >> Distance;
	cout << "等于：" << Distance * 220 << "码" << endl;
	system("pause");
}

网上的参考1

#include <iostream>

int main(void)
{
	using namespace std;
	double distance;
	cout << "Enter the distance (in long):";
	cin >> distance;
	cout << "The distance" << distance << "long" << "equals"
		<< 220 * distance << "yard." << endl;
	return 0;
}

网上的参考2

#include <iostream>
using namespace std;

int main()
{
	double long_distance;

	cout << "Enter a distance for long unit: ";
	cin >> long_distance;

	cout << long_distance << " long distance ";
	cout << "is equal to ";
	long_distance *= 220.0;
	cout << long_distance << " yard distance." << endl;
system("pause");
	return 0;
}

3.编写一个c++程序，它使用3个用户定义的函数（包括main（）），并生成下面的输出：
Three blind mice
Three blind mice
See how they run
See how they run
其中一个函数要调用两次，该函数生成前两行：另一个函数也被调用两次，并生成其余的输出。

自己写的

#include <iostream>
using namespace std;
int main() {
	for (int i = 0; i < 2; i++) {
		cout << "Three blind mice" << endl;
	}
	for (int j = 0; j < 2; j++) {
		cout << "See how they run" << endl;
	}
	system("pause");
	return 0;
}

网上的参考1

#include <iostream>
void print_mice(void);
void print_run(void);
using namespace std;

int main(void)
{
	print_mice();
	print_mice();
	print_run();
	print_run();

	return 0;
}

void print_mice(void)
{
	cout << "Three blind mice." << endl;
}

void print_run(void)
{
	cout << "See how they run." << endl;
}

网上的参考2

#include<iostream>
void A(int);
void B(int);
using namespace std;
	void A(int n)
	{
		int i;
		for (i = 0; i < n; i++)
			cout << "Three blind mice" << endl;

	}

	void B(int n)
	{
		int i;
		for (i = 0; i < n; i++)
			cout << "See how they run" << endl;

	}
	int main()
	{

		A(2);
		B(2);
		system("pause");
	}

4.编写一个程序，让用户输入其年龄，然后显示该年龄包含多少个月，如下所示：
Enter you age:29
自己写的

#include <iostream>
using namespace std;

int main()
{
	int Age;
	cout << "请输入年龄：（岁）" << endl;
	cin >> Age;
	cout << "该年龄包含：" << Age * 12 << "个月" << endl;
	system("pause");
}

网上的参考1

#include <iostream>
using namespace std;

int main(void)
{
	int years;
	cout << "Enter your age:";
	cin >> years;
	cout << "You are " << years << " years old,equals = "
		<< years * 12 << " months old." << endl;

}

网上的参考2

#include <iostream>
using namespace std;

int main()
{
	int age_total_months;

	cout << "Enter your age: ";
	cin >> age_total_months;
	cout << "Your age includes " << age_total_months * 12 << " months." << endl;
	system("pause");
	return 0;
}

5.编写一个程序，其中的mian（）调用一个用户定义的函数（以摄氏度值为参数，并返回相应的华氏温度值）。该程序按下面的格式要求用户输入摄氏温度值，并显示结果：
Please enter a Celsius value :20
20 degree Celsiue is 68 degrees Fahrenheit.
下面是转换公式：
华氏温度 = 1.8 摄氏温度 + 32.0*
自己写的

#include<iostream>
using namespace std;

int main() {

	double Celsius;
	cout << "Please enter a Celsius value:";
	cin >> Celsius;
	cout << Celsius << " degree Celsius is " << Celsius * 1.8 + 32.0
		<< " degree Fahrenheit" << endl;

	system("pause");
	return 0;
}

网上的参考1

#include <iostream>
using namespace std;
double convert(double c);
double convert(double c)
{
	return 1.8 * c + 32.0;
}

int main(void)
{
	double c_degree, f_degree;
	cout << "Please enter a Celsius value:";
	cin >> c_degree;
	f_degree = convert(c_degree);
	cout << c_degree << " degrees Celsius is " << f_degree
		<< "degrees Fahrenheit" << endl;
	return 0;

}

网上的参考2

#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;
}

网上的参考3

#include <iostream>
using namespace std;
double celsiustofahrenheit(double);
int main()
{
	double  Celsius;
	cout << "please enter a Celsius value:";
	cin >> Celsius;
	double Fahrenheit = celsiustofahrenheit(Celsius);
	cout << Celsius << " degrees Celsius is "<<Fahrenheit<<" degrees Fahrenheit" << endl;
}


double celsiustofahrenheit(double Celsius)
{
	return 1.8 * Celsius + 32.0;
}

6.编写一个程序，其main（）调用一个用户定义的函数（以光年值为参数，并返回对应天文单位的值。）该程序按下面的格式要求用户输入光年值，并显示结果：
Enter the number of light years:4.2
4.2 light years = 265608 astronomical inits.
使用double类型，转换公式为： 1光年 = 63240天文单位
自己写的

#include<iostream>
using namespace std;

int main() {

	double LightYears;
	cout << "Enter the number of light years:";
	cin >> LightYears;
	cout << LightYears << " light years = " << LightYears * 63240 
		<< " astronomical units" << endl;

	system("pause");
	return 0;
}

网上的参考1

#include <iostream>
using namespace std;
//函数声明
double converet(double light);

//函数定义
double converet(double light)
{
	return 63240 * light;
}

//函数调用
int main(void)
{
	double light_years, astro_years;
	cout << "Enter the number of light years:";
	cin >> light_years;
	astro_years = converet(light_years);

	cout << light_years << " light years = "
		<< astro_years << " astronomical units." << endl;
	return 0;
}

网上的参考2

#include <iostream>
using namespace std;

double transform(double temp);//函数声明

int main()//函数调用
{
	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)//函数定义
{
	return temp * 63240.0;
}

7.编写一个程序，要求用户输入小时数和分钟数。在main（）函数中，将这两个值传递给一个void函数，后者以下面这样的格式显示这两个值：
Enter the number of hours:9
Enter the number of minutes:28
Time:9:28
自己写的

#include<iostream>
using namespace std;

int main() {

	int Hours;
	cout << "Enter the number of light hours:";
	cin >> Hours;
	int Minutes;
	cout << "Enter the number of light minutes:";
	cin >> Minutes;
	cout << "Time:" << Hours <<  ":"<<Minutes << endl;

	system("pause");
	return 0;
}

网上的参考1

#include <iostream>
using namespace std;
//函数声明
void display_time(int h, int m);

//函数定义
void display_time(int h, int m) 
{
	cout << "Time: " << h << ":" << m << endl;
}

//函数调用
int main(void)
{
	int hours, minutes;
	cout << "Enter the number of hour:";
	cin >> hours;
	cout << "Enter the number of minutes:";
	cin >> minutes;
	
	display_time(hours, minutes);

	return 0;
}

网上的参考2

#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;
}