класс с матрицами - C++ - Ответ 1564608

#include <iostream.h>
#include <conio.h>
#include <math.h>

const int l=2;
const int s=2;
int f;
 
    class matrix {   // êëàññ ìàòðèöà
        private:
        int **matr;
 void Create()
        {
            matr = new  int*[l];
            for (int z=0; z<s; z++)
                matr[z] = new int[s];
        }
        public:
		matrix (int l,int s);       
		int* operator[](int i) { return matr[i]; } 
const int* operator[](int i) const { return matr[i]; }     
        matrix operator+(const matrix & b);
        matrix operator-(const matrix & b);
        matrix operator*(const matrix & b);
        matrix operator*(int f);        
        void   In_put();
        void   Out_put();
 ~matrix()
        {
            for (int z=0; z<l; z++)
                delete[] matr[z];
            delete[] matr;
        }

        };
 
matrix  matrix::operator*(const matrix & b)
    {
	int i,j,k;
	matrix c(l,s);
for (i=0;i<l;i++)
	for (j=0;j<l;j++)
		for (k=0; k<l; k++)
			c[i][j]+=b[i][k]+(*this)[k][j];
return c;
    };

matrix matrix::operator * (int f)
{
int i,j;
matrix c(l,s);
for (i=0;i<l;i++)
	for (j=0;j<l;j++)
		c[i][j]=((*this)[i][j])*f;
return c;
};

 
matrix matrix::operator + (const matrix & b)
{
int i,j;
matrix c(l,s);
for (i=0;i<l;i++)
	for (j=0;j<l;j++)
		c[i][j]=b[i][j]+(*this)[i][j];
return c;
};
 
matrix  matrix::operator-(const matrix & b)
{
int i,j;
matrix c(l,s);
for (i=0;i<l;i++)
	for (j=0;j<l;j++)
		c[i][j]=b[i][j]-(*this)[i][j];
return c;
};
 
void matrix::Out_put()
{
	matrix c(l,s);
for(int i=0;i<l;i++)
    {
    for(int j=0;j<l;j++) { cout<<""<<(c[i][j]);}
	cout<<endl;}        
};
 
void matrix::In_put()
{
	matrix a(l,s);
for(int i=0;i<l;i++)
    {
    for(int j=0;j<l;j++)
        {cin>>(a[i][j]);}}
};
 
int main()
{
	int f;
matrix m1(l,s), m2(l,s), m(l,s);
cout << "\nMatrix 1: \n";
m1.In_put();
cout << "\nMatrix 2: \n";
m2.In_put();
m=m1+m2;
cout << "\n Matrix 1 + Matrix 2 : \n";
m.Out_put();
cout << "\n";
m=m1-m2;
cout << "\n Matrix 1 - Matrix 2 : \n";
m.Out_put();
cout << "\n";
m=m1*m2;
cout << "\n Matrix 1 * Matrix 2 :\n";
m.Out_put();
cout << "\n";
cout<<"Enter f:";cin>>f;
m=m1*f;
cout << "\n Matrix 1 * f :\n";
m.Out_put();
m=m2*f;
cout << "\n Matrix 2 * f :\n";
m.Out_put();

return 0;
};