Nineth Week on-machine practice Project 4--my vector class

Create a vector class Myvector, declare as follows, complete the definition of the class

Class Myvector//define vector class {public:myvector (int m);  constructors, a vector of M elements, with element values preset to 0 myvector (const myvector &AMP;V); Copy constructor ~myvector ();    Destructors: Releasing storage space occupied by dynamic arrays friend IStream &operator>> (IStream &input, Myvector &d);    Friend Ostream &operator<< (ostream &output, const myvector &d); Friend Myvector operator+ (const myvector &d1,const myvector &AMP;D2);//vector addition, the corresponding position of the elements add friend Myvector operator-(co NST myvector &d1,const myvector &d2);//subtract vectors, subtract bool operator== (const myvector &d) on the corresponding position, or determine whether two matrices are equal, i.e. corresponding       Whether all elements in the position are equal private:int *array;          Array is a dynamic array pointer to the vector that occupies the starting address of the memory int num;    The number of elements in the vector};int main () {myvector D1 (5), D2 (5);    cout<< "Input d1--";    cin>>d1;    cout<< "Input d2--";    cin>>d2;    cout<< "d1=" <<d1<<endl;    cout<< "d2=" <<d2<<endl;    cout<< "d1+d2=" <<d1+d2<<endl;   cout<< "d1-d2=" <<d1-d2<<endl; cout<< "D1" << ((d1==d2)? "    = = ":"! = ") <<" D2 "<<endl; return 0;}

Code

/* Copyright (c) 2015, Yantai University School of Computer * All rights reserved. * File name: Test.cpp * Author: Simbin * Completion Date: May 8, 2015 * Version number: v1.0 */#include <iostream> #include <cstring>using name    Space Std;class myvector//define vector class {public:myvector (int m);  constructors, a vector of M elements, with element values preset to 0 myvector (const myvector &AMP;V); Copy constructor ~myvector ();    Destructors: Releasing storage space occupied by dynamic arrays friend IStream &operator>> (IStream &input, Myvector &d);    Friend Ostream &operator<< (ostream &output, const myvector &d); Friend Myvector operator+ (const myvector &d1,const myvector &AMP;D2);//vector addition, the corresponding position of the elements add friend Myvector operator-(co NST myvector &d1,const myvector &d2);//subtract vectors, subtract bool operator== (const myvector &d) on the corresponding position, or determine whether two matrices are equal, i.e. corresponding       Whether all elements in the position are equal private:int *array;          Array is a dynamic array pointer to the vector that occupies the starting address of the memory int num; The number of elements in the vector};    Myvector::myvector (int m) {num=m;    Array=new Int[m]; for (int i=0; i<m; i++) array[i]=0;} Myvector::myvector (Const Myvector &v) {num=v.num;    if (array!=null) delete []array;    Array=new Int[num]; for (int i=0; i<num; i++) array[i]=v.array[i];} Myvector::~myvector () {delete []array;}    IStream &operator>> (IStream &input, Myvector &d) {cout<<d.num<< "vector";    int i;    for (i=0; i<d.num; i++) input>>d.array[i]; return input;}    Ostream &operator<< (ostream &output, const myvector &d) {output<< "(";    for (int i=0; i<d.num-1; i++) output<<d.array[i]<< ",";    output<<d.array[d.num-1];    output<< ")"; return output;}    Myvector operator+ (const myvector &d1,const myvector &d2) {myvector T (d1.num);    T.array=new Int[t.num]; for (int i=0; i<t.num; i++) t.array[i]=d1. Array[i]+d2.    Array[i]; return t;}    Myvector operator-(const myvector &d1,const myvector &d2) {myvector T (d1.num);    T.array=new Int[t.num];      for (int i=0; i<t.num; i++)  T.array[i]=d1. Array[i]-d2.    Array[i]; return t;}    BOOL myvector::operator== (const myvector &d) {int m=0,i;    for (i=0; i<num; i++) if (array[i]!=d.array[i]) m++;    if (m==0) return true; else return false;}    int main () {myvector D1 (5), D2 (5);    cout<< "Input d1--";    cin>>d1;    cout<< "Input d2--";    cin>>d2;    cout<< "d1=" <<d1<<endl;    cout<< "d2=" <<d2<<endl;    cout<< "d1+d2=" <<d1+d2<<endl;    cout<< "d1-d2=" <<d1-d2<<endl; cout<< "D1" << ((d1==d2)? "    = = ":"! = ") <<" D2 "<<endl; return 0;}

Operation Result:

Nineth Week on-machine practice Project 4--my vector class