C++ primer plus 第六版编程练习题参考代码（第二章）

如题，从Python的语言转入C ++语言学习，记录下自己的习题练习！

每个题目后，附上调试结果，大家可以直接复制代码自行编译！

纯参考，希望大家提出批评！

练习一：编写一个C ++程序，显示您的姓名。

#include "pch.h"
#include 

using namespace std;

int main()
{
	cout << "my name is huangchao, and i live in xi'an! " << endl;
	return 0;
}

 

练习二：

#include "pch.h"
#include 

//将long转换成ma，1long=30ma

using namespace std;
float conv(float);

int main()
{
	float changdu;
	cout << "please enter the changdu:  " << endl;
	cin >> changdu;
	float ma = conv(changdu);
	cout << changdu << " chang is ";
	cout << ma << " ma " << endl;
	return 0;
}

float conv(float unit1)
{
	return 30 * unit1;
}

练习三：

#include "pch.h"
#include 

void fuc_1();
void fuc_2();

using namespace std;

int main()
{
	fuc_1();
	fuc_1();
	fuc_2();
	fuc_2();
	return 0;
}

void fuc_1()
{
	cout << "Three blind mice " << endl;
}

void fuc_2()
{
	cout << "See how they run " << endl;
}

练习四：

#include "pch.h"
#include 
int fuc_1(int);
using namespace std;


int main()
{
	int age;
	cout << "Enter your age: ";
	cin >> age;
	int month = fuc_1(age);
	cout << "Your are " << age << "years; ";
	cout << "and equal to " << month << " month! " << endl;
	return 0;
}

int fuc_1(int n)
{
	int months = n * 12;
	return months;
}

练习五：

#include "pch.h"
#include 
float fuc_1(float);
using namespace std;


int main()
{
	int cels;
	cout << "Please enter a Celsius value: ";
	cin >> cels;
	int fahr = fuc_1(cels);
	cout << cels << " degrees celsius is " << fahr << " degrees Fahrenheit" << endl;
	return 0;
}

float fuc_1(float n)
{
	int fahr = n * 1.8+32.0;
	return fahr;
}

练习六：

#include "pch.h"
#include 
float fuc_1(float);
using namespace std;


int main()
{
	float guangnian;
	cout << "Enter a number of light years: ";
	cin >> guangnian;
	int tianwen = fuc_1(guangnian);
	cout << guangnian << " light years = " << tianwen << " astronomical units." << endl;
	return 0;
}

float fuc_1(float n)
{
	int unit = n * 63240;
	return unit;
}

练习七：

#include "pch.h"
#include 

void fuc_1(int,int);
using namespace std;

int main()
{
	cout << "Enter the number of hours: ";
	int time;
	cin >> time;

	cout << "Enter the number of minutes: ";
	int minutes;
	cin >> minutes;

	fuc_1(time, minutes);
	return 0;
}

void fuc_1(int m, int n)
{
	cout << "Time: " << m <<":"<< n ;
}

 

实际上，上述代码还有很多缺点。再学习了第三章之后，发现之前程序里的变量定义都未初始化，这是很不好的习惯。

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