第三周实验报告任务3（输入一个时间并增加时分秒）

#include <iostream>

using namespace std;

class Time
{
public:
void set_time( );

void show_time( );

inline void add_a_sec();  //增加1秒钟

inline void add_a_minute(); //增加1分钟

inline void add_an_hour(); //增加1小时

void add_seconds(int n); //增加n秒钟

void add_minutes(int n); //增加n分钟

void add_hours(int n); //增加n小时

private:
bool is_time ( int, int, int );

int hour;

int minute;

int sec;

int hour1;

int minute1;

int sec1;

};

int main( )
{
int x,y,z;

Time t1;

Time&t2 = t1;

t1.set_time();

t2.show_time ();

cout << "请输入要增加的时分秒：" << endl;

cin >> x >> y >> z;

t1.add_seconds ( z );

t1.add_minutes ( y );

t1.add_hours ( x );

t2.show_time ();

return 0;
}

void Time :: set_time()
{
char c1,c2;

cout << "请输入时间 ( 格式 hh:mm:ss ) ";

while(1)
{
cin >> hour >> c1 >> minute >> c2 >> sec;
hour1 = hour;

minute1 = minute;

sec1 = sec;

if (c1 != ':' || c2 != ':')

cout << "格式不正确，请重新输入" << endl;

else if (!is_time(hour,minute,sec))

cout << "时间非法，请重新输入" << endl;
else
break;
}
}

void Time::show_time( )
{
cout << hour << ":" << minute << ":" << sec << endl;
}

bool Time::is_time ( int h,int m, int s )
{
if (h<0 ||h>24 || m<0 ||m>60 || s<0 ||s>60)

return false;

return true;
}

inline void Time::add_a_sec()  //增加1秒钟
{
sec = sec+1;

if(sec>60||sec==60)
{
minute = minute+(sec/60);

sec = sec%60;
}

}

inline void Time::add_a_minute() //增加1分钟
{
minute = minute+1;

if(minute>60||minute == 60)
{
hour = hour+(minute/60);

minute = minute%60;
}

}

inline void Time::add_an_hour() //增加1小时
{
hour = hour+1;

if (hour>23)

{

hour=hour%24;

}

}

void Time::add_seconds(int n)//增加n秒钟
{
sec = sec+n;

if(sec>60||sec==60)
{
minute = minute + (sec/60);
sec = sec%60;
}

}

void Time::add_minutes(int n) //增加n分钟
{
minute = minute + n;

if(minute > 60||minute == 60)
{
hour = hour + ( minute/60 );

minute = minute % 60;
}

}

void Time::add_hours(int n) //增加n小时
{
hour = hour + n;

if (hour>23)

{

hour=hour%24;

}