c++第四次作业

来源：互联网发布：mysql frm hy000 编辑：程序博客网时间：2024/06/16 12:11
1.#include <iostream>    using namespace std;    class Complex{    public:        Complex()        {         real=0;         imag=0;        }        Complex(double r,double i)        {         real=r;         imag=i;        }        double getreal()        {         return real;        }        double getimag()        {         return imag;        }        void display()        {         cout<<"("<<real<<"+"<<imag<<"i)"<<endl;        }    private:        double real;        double imag;    };    Complex operator +(Complex &c1,Complex &c2)    {     return Complex(c1.getreal()+c2.getreal(),c1.getimag()+c2.getimag());    }    int main()    {     Complex c1(1,2),c2(3,4),c3;     c3=c1+c2;     cout<<"c3=";     c3.display();     return 0;    }        [html] view plaincopy  2. #include <iostream>    using namespace std;    class Complex{    public:        Complex()        {         real=0;         imag=0;        }        Complex(double r,double i)        {         real=r;         imag=i;        }        Complex operator +(Complex &);        Complex operator -(Complex &);        Complex operator *(Complex &);        Complex operator /(Complex &);        void display()        {         cout<<"("<<real<<"+"<<imag<<"i)"<<endl;        }    private:        double real;        double imag;    };    Complex Complex::operator +(Complex &c2)    {     return Complex(real+c2.real,imag+c2.imag);    }    Complex Complex::operator -(Complex &c2)    {     return Complex(real-c2.real,imag-c2.imag);    }    Complex Complex::operator *(Complex &c2)    {     return Complex(real*c2.real,imag*c2.imag);    }    Complex Complex::operator /(Complex &c2)    {     return Complex(real/c2.real,imag/c2.imag);    }    int main()    {     Complex c1(2,4),c2(1,2),c3,c4,c5,c6;     c3=c1+c2;     cout<<"c3=c1+c2=";     c3.display();     c4=c1-c2;     cout<<"c4=c1-c2=";     c4.display();     c5=c1*c2;     cout<<"c5=c1*c2=";     c5.display();     c6=c1/c2;     cout<<"c6=c1/c2=";     c6.display();     return 0;    }        [html] view plaincopy  3.#include <iostream.h>    class Complex{    public:        Complex()        {         real=0;         imag=0;        }        Complex(double r,double i)        {         real=r;         imag=i;        }        Complex operator +(Complex &);        Complex operator +(int &);        friend Complex operator +(int &,Complex &);        void display()        {         cout<<"("<<real<<"+"<<imag<<"i)"<<endl;        }    private:        double real;        double imag;    };    Complex Complex::operator +(Complex &c2)    {     return Complex(real+c2.real,imag+c2.imag);    }    Complex Complex::operator +(int &i)    {     return Complex(real+i,imag);    }    Complex operator +(int &i,Complex &c3)    {     return Complex(i+c3.real,c3.imag);    }    int main()    {     int i=2;     Complex c1(2,4),c2(1,2),c3,c4,c5;     c3=c1+c2;     cout<<"c3=c1+c2=";     c3.display();     c4=c1+i;     cout<<"c4=c1+i=";     c4.display();     c5=i+c2;     cout<<"c5=i+c2=";     c5.display();     return 0;    }        [html] view plaincopy  4. #include <iostream.h>    class Matrix{    public:        Matrix();        friend Matrix operator +(Matrix &,Matrix &);        void input();        void display();    private:        int mat[2][3];    };    Matrix::Matrix()    {     for(int i=0;i<2;i++)         for(int j=0;j<3;j++)             mat[i][j]=0;    }    Matrix operator +(Matrix &a,Matrix &b)    {     Matrix c;     for(int i=0;i<2;i++)         for(int j=0;j<3;j++)             c.mat[i][j]=a.mat[i][j]+b.mat[i][j];         return c;    }    void Matrix::input()    {     for(int i=0;i<2;i++)         for(int j=0;j<3;j++)             cin>>mat[i][j];    }    void Matrix::display()    {     for(int i=0;i<2;i++)         for(int j=0;j<3;j++)         {cout<<mat[i][j]<<" ";         cout<<endl;}    }    int main()    {     Matrix a,b,c;     a.input();     b.input();     c=a+b;     c.display();     return 0;    }        [html] view plaincopy  5. #include <iostream.h>    class Matrix{    public:         Matrix();        friend Matrix operator +(Matrix &,Matrix &);        friend istream& operator >>(istream &,Matrix &);        friend ostream& operator <<(ostream &,Matrix &);    private:        int mat[2][3];    };    Matrix::Matrix()    {     for(int i=0;i<2;i++)         for(int j=0;j<3;j++)             mat[i][j]=0;    }    Matrix operator +(Matrix &a,Matrix &b)    {     Matrix c;     for(int i=0;i<2;i++)         for(int j=0;j<3;j++)             c.mat[i][j]=a.mat[i][j]+b.mat[i][j];         return c;    }    istream & operator >>(istream & in,Matrix &c)    {     for(int i=0;i<2;i++)         for(int j=0;j<3;j++)             in>>c.mat[i][j];         return in;    }    ostream & operator <<(ostream & out,Matrix &c)    {     for(int i=0;i<2;i++)         for(int j=0;j<3;j++)         {         out<<c.mat[i][j]<<" ";         cout<<endl;         }         return out;    }    int main()    {     Matrix a,b,c;     cin>>a;     cout<<a;     cin>>b;     cout<<b;     c=a+b;     cout<<c;     return 0;    }        [html] view plaincopy  6. #include <iostream>    using namespace std;    class Complex{    public:         Complex()        {         real=0;         imag=0;        }        Complex(double r)        {         real=r;         imag=0;        }        Complex(double r,double i)        {         real=r;         imag=i;        }        operator double()        {         return real;        }        void display()        {         cout<<"("<<real<<"+"<<imag<<"i)"<<endl;        }    private:        double real;        double imag;    };    int main()    {     int i=2;     Complex c1(2,4),c2;     double d1;     d1=2.5+c1;     cout<<"d1="<<d1<<endl;     c2=Complex(d1);     cout<<"c2="<<c2.display<<endl;     return 0;    }        [html] view plaincopy  7. #include <iostream>    using namespace std;    #include <cstring>    class Student{    public:        Student(int,char[],char,float);        int get_num()        {         return num;        }        char * get_name()        {         return name;        }        char get_sex()        {         return sex;        }        void display()        {         cout<<"num="<<num<<endl;         cout<<"name="<<name<<endl;         cout<<"sex="<<sex<<endl;         cout<<"score="<<score<<endl;        }    private:        int num;        char name[20];        char sex;        float score;    };    Student::Student(int n,char nam[],char s,float so)    {     num=n;     strcpy(name,nam);     sex=s;     score=so;    }    class Teacher{    public:        Teacher(){}        Teacher(Student &stud)        {          num=stud.get_num();          strcpy(name,stud.get_name());          sex=stud.get_sex();          pay=3000;        }        Teacher(int n,char nam[],char s,float p)        {           num=n;           strcpy(name,nam);           sex=s;           pay=p;        }        void display()        {         cout<<"num="<<num<<endl;         cout<<"name="<<name<<endl;         cout<<"sex="<<sex<<endl;         cout<<"pay="<<pay<<endl;        }    private:        int num;        char name[20];        char sex;        float pay;    };    //Teacher::Teacher(int n,char nam[],char s,float p){ num=n; strcpy(name,nam); sex=s; pay=p;}    //Teacher::Teacher(Student &stud){num=stud.get_num();strcpy(name,stud.get_name());sex=stud.get_sex();pay=3000;}    int main()    {        Teacher t1;        Student s1(1,"xian",'F',100);        cout<<"s1:"<<endl;        s1.display();        t1=Teacher(s1);        cout<<"t1:"<<endl;        t1.display();        return 0;    }
0 0