cs11_c++_lab2

Matrix.hh

 class Matrix
 {
     int row;
     int col;
     int *p;
 public:

     Matrix();
     Matrix(int x,int y);
     ~Matrix();

     Matrix(Matrix &m);

     int getrows();
     int getcols();

     void setelem(int x,int y,int elem);

     int getelem(int x,int y);

     void add(Matrix &m);

     void subtract(Matrix &m);    

     bool equals(Matrix &m);
 };

Matrix.cpp

 #include "Matrix.hh"
 #include <cassert>
 #include <iostream>

 using namespace std;

 Matrix::Matrix()
 {
     row=;
     col=;
     p=;
 }

 Matrix::Matrix(int x,int y)
 {
     assert(x>=);
     assert(y>=);
     row=x;
     col=y;
     p=new int[row*col];
     for(int i=;i<row*col;i++)
         p[i]=;
 }

 Matrix::Matrix(Matrix &m)
 {
     row=m.row;
     col=m.col;
     p=new int[row*col];
     for(int i=;i<row*col;i++)
     p[i]=m.p[i];
 }

 Matrix::~Matrix()
 {
     delete[] p;
 }

 int Matrix::getrows()
 {
     return row;
 }

 int Matrix::getcols()
 {
     return col;
 }

 int Matrix::getelem(int x,int y)
 {
     assert(x>=);
     assert(y>=);
     return p[x*col+y];
 }

 void Matrix::setelem(int x,int y,int elem)
 {
     assert(x>=);
     assert(y>=);
     p[x*col+y]=elem;
 }

 void Matrix::add(Matrix &m)
 {
     assert(    (row==m.row) || (col==m.col) );
     for(int i=;i<row*col;i++)
     p[i]+=m.p[i];
 }

 void Matrix::subtract(Matrix &m)
 {
     assert( (row==m.row) || (col==m.col) );
     for(int i=;i<row*col;i++)
     p[i]-=m.p[i];
 }

 bool Matrix::equals(Matrix &m)
 {
     bool b=true;
     if( (row!=m.row) || (col!=m.col) )return false;
     for(int i=;i<row*col;i++)
         if(p[i]!=m.p[i])
         {    b=false;return b;}
     return b;
 }