C++ Primer Plus 第六版(中文版)第十一章(重置版)编程练习答案
//本章程序需分多文件运行，请读者注意;
//本博主所写的代码仅为阅读者提供参考;
//若有不足之处请提出，博主会尽所能修改;
//附上课后编程练习题目;
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//--------------------------------------------------------------------
//11.9 - 1(main).cpp
#include //11.9 - 1(vect).h
#ifndef VECT_H_
#define VECT_H_
#include //11.9 - 1(vect).cpp
#include //--------------------------------------------------------------------
//--------------------------------------------------------------------
//11.9 - 2(main).cpp
#include //11.9 - 2(vect).h
#ifndef VECT_H_
#define VECT_H_
#include //11.9 - 2(vect).cpp
#include //--------------------------------------------------------------------
//--------------------------------------------------------------------
//11.9 - 3(main).cpp
#include //11.9 - 3(vect).h
#ifndef VECT_H_
#define VECT_H_
#include //11.9 - 3(vect).cpp
#include //--------------------------------------------------------------------
//--------------------------------------------------------------------
//11.9 - 4(main).cpp
#include //11.9 - 4(mytime3).h
#ifndef MYTIME3_H_
#define MYTIME3_H_
#include //11.9 - 4(mytime3).cpp
#include "mytime3.h"
Time::Time()
{
hours = minutes = 0;
}
Time::Time(int h, int m)
{
hours = h, minutes = m;
}
void Time::AddMin(int m)
{
minutes += m;
hours += minutes / 60;
minutes %= 60;
}
void Time::AddHr(int h)
{
hours += h;
}
void Time::Reset(int h, int m)
{
hours = h, minutes = m;
}
Time operator+(const Time &a, const Time &b)
{
Time sum;
sum.minutes = a.minutes + b.minutes;
sum.hours = a.hours + b.hours + sum.minutes / 60;
sum.minutes %= 60;
return sum;
}
Time operator-(const Time &a, const Time &b)
{
Time diff;
int tot1, tot2;
tot1 = a.minutes + 60 * a.hours;
tot2 = b.minutes + 60 * b.hours;
diff.minutes = (tot2 - tot1) % 60;
diff.hours = (tot2 - tot1) / 60;
return diff;
}
Time operator*(const Time &t, double mult)
{
Time result;
long totalminutes = t.hours * mult * 60 + t.minutes * mult;
result.hours = totalminutes / 60;
result.minutes = totalminutes % 60;
return result;
}
std::ostream &operator<<(std::ostream &os, const Time &t)
{
os << t.hours << " hours, " << t.minutes << " minutes";
return os;
}
//--------------------------------------------------------------------
//--------------------------------------------------------------------
//11.9 - 5(main).cpp
#include //11.9 - 5(stonewt).h
#ifndef STONEWT_H_
#define STONEWT_H_
class Stonewt
{
public:
enum Mode { STONE, INT_POUND, DOUBLE_POUND };
private:
enum { Lbs_per_stn = 14 }; //1英石等于14英镑;
int stone;
double pds_left;
double pounds;
int pounds_int;
Mode mode;
void set_stone(); //设置stone英石变量;
void set_pounds(); //设置pounds英镑变量;
void set_pounds_int(); //设置pounds整型英镑变量;
public:
Stonewt(double lbs, Mode form);
Stonewt(int stn, double lbs, Mode form);
Stonewt();
~Stonewt();
void set_stone_mode(); //设置英石格式;
void set_pounds_mode(); //设置整数磅格式;
void set_int_pounds_mode(); //设置浮点磅格式;
Stonewt operator+(const Stonewt &st) const; //重载'+'运算符;
Stonewt operator-(const Stonewt &st) const; //重载'-'运算符;
Stonewt operator*(double n) const; //重载'*'运算符;
friend Stonewt operator*(double n, const Stonewt &st); //友元函数重载'*'运算符可以令对象在'*'右边进行操作;
friend std::ostream &operator<<(std::ostream &os, const Stonewt &st);
};
#endif
//11.9 - 5(stonewt).cpp
#include //--------------------------------------------------------------------
//--------------------------------------------------------------------
//11.9 - 6(main).cpp
#include //11.9 - 6(stonewt).h
#ifndef STONEWT_H_
#define STONEWT_H_
#include //11.9 - 6(stonewt).cpp
#include //--------------------------------------------------------------------
//--------------------------------------------------------------------
//11.9 - 7(main).cpp
#include //11.9 - 7(complex0).h
#ifndef COMPLEX0_H_
#define COMPLEX0_H_
#include //11.9 - 7(complex0).cpp
#include //--------------------------------------------------------------------
//------------------------------------------2020年11月5日 ----------------------------------------------;