3-3.cpp

矩阵的加减计算

#include <iostream>
using namespace std;
class Matrix
{
    public:                                             /*外部借口，公有成员函数*/ 
        Matrix(int NewL,int NewR)                       /*构造函数*/ 
        {
            lines=NewL;
            rows=NewR;
            NewRec =new int*[lines];
            for(int i=0;i<rows;i++)   
            {   
                *(NewRec+i)=new int[lines];   
            } 
        }
        Matrix(Matrix &M)                                /*拷贝构造函数*/
        {
            lines=M.lines;
            rows=M.rows;
            NewRec=M.NewRec;
        }
        ~Matrix(){}                                      /*析构函数*/ 
/*        {
            for(int i=0;i<rows;i++)   
            {   
                delete *(NewRec+i);   
            }  
            delete NewRec;
        }*/
        void GetIn()
        {
            int i,j;
            for (i=0;i<lines;i++)
                for (j=0;j<rows;j++)
                {
                    cin >> NewRec[i][j];
                }     
            return; 
        }
        void GetOut()
        {
             int i,j;
             for (i=0;i<lines;i++)
             {
                 for (j=0;j<rows;j++)
                 {
                     cout << NewRec[i][j] << "\t";
                 }
                 cout << endl;
             }
             return; 
        }
        int **GetRec() {return NewRec;}
        int GetL() {return lines;}
        int GetR() {return rows;}
    private:                                             /*私有数据成员*/ 
        int lines,rows;
        int **NewRec;
};

void Plus (int **a,int **b,int **c,int l,int r)
{
    int i,j;
    for (i=0;i<l;i++)
    {
        for (j=0;j<r;j++)
        {
            *(*(c+i)+j)= *(*(a+i)+j)+(*(*(b+i)+j));
        }
    }
    return; 
}
void Minus (int **a,int **b,int **c,int l,int r)
{
    int i,j;
    for (i=0;i<l;i++)
    {
        for (j=0;j<r;j++)
        {
            *(*(c+i)+j)= *(*(a+i)+j)-(*(*(b+i)+j));
        }
    }
    return; 
}

int main()
{
    int L1,R1,L2,R2;
    cout << "请输入矩阵A1大小:" << endl;
    cin >> L1 >> R1; 
    cout << "请输入矩阵A2大小:" << endl;
    cin >> L2 >> R2; 
    Matrix A1(L1,R1);
    Matrix A2(L2,R2);
    Matrix A3(L1,R1);
    cout << "请输入矩阵A1的数据:" << endl;
    A1.GetIn();
    cout << "矩阵A1的数据为:" << endl;
    A1.GetOut();
    cout << "请输入矩阵A2的数据:" << endl;
    A2.GetIn();
    cout << "矩阵A2的数据为:" << endl;
    A2.GetOut();
    Plus(A1.GetRec(),A2.GetRec(),A3.GetRec(),L1,R1);
    cout << "矩阵A3的数据(相加)为:" << endl;
    A3.GetOut();
    Minus(A1.GetRec(),A2.GetRec(),A3.GetRec(),L1,R1);
    cout << "矩阵A3的数据(相减)为:" << endl;
    A3.GetOut();
    ///////////////////////////////////////////////////////////////////////
    Matrix *Ptr1=new Matrix (L1,R1);
    Matrix *Ptr2=new Matrix (L2,R2);
    Matrix *Ptr3=new Matrix (L1,R1);
    cout << "请输入矩阵A1的数据:" << endl;
    Ptr1->GetIn ();
    cout << "请输入矩阵A2的数据:" << endl;
    Ptr2->GetIn ();
    Plus (Ptr1->GetRec(),Ptr2->GetRec(),Ptr3->GetRec(),L1,R1);
    cout << "矩阵A3的数据(相加)为:" << endl;
    Ptr3->GetOut ();
    Minus (Ptr1->GetRec(),Ptr2->GetRec(),Ptr3->GetRec(),L1,R1); 
    cout << "矩阵A3的数据(相减)为:" << endl;
    Ptr3->GetOut ();
    delete Ptr1;
    delete Ptr2;
    delete Ptr3;                 
    /////////////////////////////////////////////////////////
    system("pause");
    return 0;
}