c++-pimer-plus-6th-chapter02

《C++ primer plus 英文版 第六版》娓娓道来。这个是上下分册。而且，出版时间是最新的2015年，买回来发现网上的勘误基本都被纠正过来了，极个别错误没有影响到理解，好哎！而且发现遣词造句特别简单，读着也顺畅。
电子版（PDF）：
C++ Primer Plus Sixth Edition.pdf密码:910h
C++ Primer.Plus 第6版中文版密码:ihsq
Chpter Review 的解答参考书的 Appendix J
Programming Exercises 主要参考了下边的帖子：
C++-primer-plus(第6版)中文版编程练习答案（完全版）.pdf密码:20rn
C++-Primer-Plus(第六版)编程习题解答（不完全版）.doc密码:hxzs
charlesdong
下文 Programming Exercises 部分的代码亲自敲过，可运行。环境：macOS 下 Xcode

Chapter Review

1. They are called functions.
2. It causes the contents of the iostream file to be substituted for this directive before final compilation.
3. It makes definitions made in the std namespace available to a program.
4. cout << "Hello, world" << endl; or cout << "Hello, world\n";
5. int cheeses;
6. cheeses = 32;
7. cin >> cheeses;
8. cout << "We have " << cheeses << " varieties of cheese\n";
9. The function froop() expects to be called with one argument, which will be type double, and that the function will return a type int value. For instance, it could be used as follows:
   int gval = froop(3.14159);
   The function rattle() has no return value and expects an int argument. For instance, it could be used as follows:
   rattle(37);
   The function prune() returns an int and expects to be used without an argument. For instance, it could be used as follows:
   int residue = prune();
10. You don't have to use return in a function when the function has the return type void. However, you can use it if you don't give a return value:
    return;
11. The likely cause it that the function loses a statement using namespace std; to declare a directive of output.
    place using namespace std; above the main() function;
    place using std::cout; in the main() function;
    type as following: using std::cout << "Please enter your PIN: " << std::endl;

Programming Exercises

1

#include <iostream>

int main()
{
    using namespace std;

    cout << "Name: NaRiSu;\n"
         << "Address: BeiJing;" << endl;

    return 0;
}

2

#include <iostream>

int main()
{
    using namespace std;

    int furlong;
    cin >> furlong;
    cout << furlong << " furlong(s) = "
         << 220 * furlong << " yard(s)" << endl;

    return 0;
}

3

#include <iostream>
void f1();
void f2();

using namespace std;

int main()
{
    f1();
    f1();
    f2();
    f2();

    return 0;
}

void f1()
{
    cout << "Three blind mice" << endl;
}

void f2()
{
    cout << "See how they run\n"; // 也可以用f1()函数中的endl形式。

    return; // void f2()表明无返回值，故可以这样写；也可以如f1()不写return语句。
}

4

#include <iostream>

int main()
{
    using namespace std;

    cout << "Enter your age: ";
    int age;
    cin >> age;
    cout << "Your age in months is " << 12 * age << "." << endl;

    return 0;
}

5

#include <iostream>
double fahrenheit(double);

int main()
{
    using namespace std;

    cout << "Please enter a Celsius value: ";
    int celsius;
    cin >> celsius;
    cout << celsius << " degrees Celsius is "
         << fahrenheit(celsius) << " degrees Fahrenheit." << endl;

    return 0;
}

double fahrenheit(double n)
{
    return 1.8 * n + 32.0;
}

6

#include <iostream>
double astronomical(double);

int main()
{
    using namespace std;

    cout << "Enter the number of light years: ";
    double light;
    cin >> light;
    cout << light << " light years = "
         << astronomical(light) << " astronomical units." << endl;

    return 0;
}

double astronomical(double n)
{
    return 63240 * n;
}

7

#include <iostream>
void f(int, int);

int main()
{
    using namespace std;

    cout << "Enter the number of hours: ";
    int hour;
    cin >> hour;
    cout << "Enter the number of minutes: ";
    int minute;
    cin >> minute;
    f(hour, minute);

    return 0;
}

void f(int h, int m)
{
    using namespace std;

    cout << "Time: " << h << " : " << m << endl;
}