Matrix.hh
1 class Matrix 2 { 3 int row; 4 int col; 5 int *p; 6 public: 7 8 Matrix(); 9 Matrix(int x,int y); 10 ~Matrix(); 11 12 Matrix(Matrix &m); 13 14 int getrows(); 15 int getcols(); 16 17 void setelem(int x,int y,int elem); 18 19 int getelem(int x,int y); 20 21 void add(Matrix &m); 22 23 void subtract(Matrix &m); 24 25 bool equals(Matrix &m); 26 };
Matrix.cpp
1 #include "Matrix.hh" 2 #include <cassert> 3 #include <iostream> 4 5 using namespace std; 6 7 Matrix::Matrix() 8 { 9 row=0; 10 col=0; 11 p=0; 12 } 13 14 Matrix::Matrix(int x,int y) 15 { 16 assert(x>=0); 17 assert(y>=0); 18 row=x; 19 col=y; 20 p=new int[row*col]; 21 for(int i=0;i<row*col;i++) 22 p[i]=0; 23 } 24 25 Matrix::Matrix(Matrix &m) 26 { 27 row=m.row; 28 col=m.col; 29 p=new int[row*col]; 30 for(int i=0;i<row*col;i++) 31 p[i]=m.p[i]; 32 } 33 34 Matrix::~Matrix() 35 { 36 delete[] p; 37 } 38 39 int Matrix::getrows() 40 { 41 return row; 42 } 43 44 int Matrix::getcols() 45 { 46 return col; 47 } 48 49 int Matrix::getelem(int x,int y) 50 { 51 assert(x>=0); 52 assert(y>=0); 53 return p[x*col+y]; 54 } 55 56 void Matrix::setelem(int x,int y,int elem) 57 { 58 assert(x>=0); 59 assert(y>=0); 60 p[x*col+y]=elem; 61 } 62 63 void Matrix::add(Matrix &m) 64 { 65 assert( (row==m.row) || (col==m.col) ); 66 for(int i=0;i<row*col;i++) 67 p[i]+=m.p[i]; 68 } 69 70 void Matrix::subtract(Matrix &m) 71 { 72 assert( (row==m.row) || (col==m.col) ); 73 for(int i=0;i<row*col;i++) 74 p[i]-=m.p[i]; 75 } 76 77 bool Matrix::equals(Matrix &m) 78 { 79 bool b=true; 80 if( (row!=m.row) || (col!=m.col) )return false; 81 for(int i=0;i<row*col;i++) 82 if(p[i]!=m.p[i]) 83 { b=false;return b;} 84 return b; 85 }
