作业4.17~4.20

来源：互联网发布：最好的网络教学平台编辑：程序博客网时间：2024/06/05 15:29

作业4.17

#include<iostream>using namespace std;class Student{public:void setStu(int num,float s){number=num;score=s;}    void disp(){cout<<number<<" "<<score<<endl;}private:int number;float score;};int main(){Student stu[6];Student*p;stu[0].setStu(21,90);    stu[1].setStu(22,87.5);stu[2].setStu(23,77);stu[3].setStu(24,88);stu[4].setStu(25,90);stu[5].setStu(26,89);p=stu;int i;for(i=0;i<6;i++,p++)    p->disp();return 0;}

作业4.18

#include <iostream>using namespace std;class Student {public:Student(int, float);void max(Student* s);private:int num;float score;};Student::Student(int n, float s):num(n),score(s){}void Student::max(Student* s){int i, max_num=0, max_score=0;for(i=0;i<6;++i)if((s+i)->score > max_score){max_score=(s+i)->score;max_num=(s+i)->num;}cout<<"所有学生中成绩最高学生的学号为:"<<max_num<< endl;}int main(){  int i;Student s[6]={Student(1,98),Student(22,95),Student(23,85),Student(24,89.5),Student(25,88),Student(26,90)};Student *p;p=&s[0];s[i].max(p);return 0;}

作业4.19

#include<iostream>using namespace std;class book{public:book(int j){qu=j;price=10*qu;}void disp(){cout<<"qu*price="<<qu*price<<endl;}private:int qu;float price;};int main(){int i;book b1[5]={1,2,3,4,5};for(i=0;i<5;i++){b1[i].disp();}return 0;}

作业4.20

#include<iostream>using namespace std;class book{public:void setbook(int j){qu=j;price=10*qu;}void disp(){cout<<"qu*price="<<qu*price<<endl;}private:int qu;float price;};int main(){  book b1[5];   book *p; b1[0].setbook(1); b1[1].setbook(2); b1[2].setbook(3); b1[3].setbook(4); b1[4].setbook(5);p=b1;int i;   for(i=0;i<5;i++,p++)  b1[4-i].disp();return 0;}

0 0