C++面向对象实验（二）

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#include<iostream>#include<cstdlib>#include<cstdio>#include<cmath>#include<cstring>#include<string>#include<cstdlib>#include<algorithm>using namespace std;class Student {char name[15];int english;int computer;int total;public:void input();void display();friend void Sort(Student *T, int n);Student& operator=(const Student &T);};void Student::input(){cout << "输入名字：";cin >> name;cout << "输入英文成绩：";cin >> english;cout << "输入计算机成绩：";cin >> computer;total = english + computer;}void Student::display(){cout << "名字:" << name << endl;cout << "英语成绩:" << english << endl;cout << "计算机成绩:" << computer << endl;cout << "总成绩:" << total << endl;}Student& Student::operator=(const Student &T){if (this == &T)return *this;strcpy(name, T.name);english = T.english;computer = T.computer;total = T.total;return *this;} void Sort(Student *T, int n){int biao = 0;for (int i = 0; i < n - 1; i++){biao = 0;for (int j = n - 2 ; j >= 0; j--){if (T[j+1].total > T[j].total){swap(T[j],T[j+1]); biao = 1;}if (!biao)break;}} } int main(){int n;cout << "输入学生人数：";cin >> n;Student *p = new Student[n];for (int i = 0; i < n; i++)p[i].input();Sort(p,n);for (int i = 0; i < n; i++)p[i].display(); return 0;}

#include<iostream>#include<cstdlib>#include<cstdio>#include<cmath>#include<cstring>#include<string>#include<cstdlib>#include<algorithm>using namespace std;class Point {int x;int y;public:Point(int x1, int y1) : x(x1), y(y1) { }friend double getDistance(const Point &p1, const Point &p2);};double getDistance(const Point &p1, const Point &p2){double x = p1.x - p2.x;double y = p1.y - p2.y;return sqrt(pow(x, 2) + pow(y, 2));}int main(){int x, y;cin >> x >> y;Point p1(x,y);x = y = 0;cin >> x >> y;Point p2(x,y);cout << "距离:" << getDistance(p1, p2);return 0;}

#include<iostream>#include<cstdlib>#include<cstdio>#include<cmath>#include<cstring>#include<string>#include<cstdlib>#include<algorithm>using namespace std;class Time {int hour;int minute;int second;public:Time(int hour1, int minute1, int second1) : hour(hour1), minute(minute1), second(second1) { }friend int relSecond(Time &t1, Time &t2);};int relSecond(Time &t1, Time &t2){int sec1 = t1.hour * 3600 + t1.minute * 60 + t1.second;int sec2= t2.hour * 3600 + t2.minute * 60 + t2.second;if (sec1 >= sec2)return sec1 - sec2;elsereturn sec2 - sec1;}int main(){int hour, minute, second;cin >> hour >> minute >> second;Time t1(hour, minute, second);hour = minute = second = 0;cin >> hour >> minute >> second;Time t2(hour, minute, second);cout << "相差的秒数为:" << relSecond(t1, t2) << endl;return 0;}

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