#include <stdafx.h>
#include <iostream>
using namespace std;

class matrix
{
    int **a;
public:
    int str,stb;
    matrix();
    ~matrix();
    void razmer();
    void sozdanie();
    void umnogenie(matrix m1,matrix m2);
    void vivod();
};

matrix::matrix()
{
    cout<<"Vvedite kolichestvo strok i stolbsov v pervoi matrice: ";
    cin>>str>>stb;
    a=new int*[str];
    for(int i=0;i<stb;i++)
        a[i]=new int;
}
matrix::~matrix()
{
    free(a);
}
void matrix::sozdanie()
{
    int scan;
    cout<<"\n";
    cout<<"Menu sozdania matrici:\n  1-ruchnoi vvod\n  2-avtozapolnenie\nscan: ";
    cin>>scan;
    for(int i=0;i<str;i++)
        for(int j=0;j<stb;j++)
            if(scan==1)
            {
                cout<<"Vvedite["<<i+1<<"]"<<"["<<j+1<<"]"<<"element:";
                cin>>a[i][j];
            }
            else a[i][j]=rand()%9;
}

void matrix::vivod()
{
    int i=0,j=0;
    for(i=0;i<str;i++)
    {
        cout<<"\n";
        for(j=0;j<stb;j++)
        {
            cout<<" ";
            cout<<a[i][j];
        }
    }
}

void matrix::umnogenie(matrix m1,matrix m2)
{
    for(int i=0;i<m1.stb;i++)
        for(int j=0;j<m1.stb;j++)
        {
            a[i][j]=0;
            for(int k=0;k<m1.stb;k++)
                a[i][j]+=m1.a[i][k]*m2.a[k][j];
        }
}
int main()
{
    matrix m1,m2,m3;
    m1.sozdanie();
    cout<<"\nPervia matrica: ";
    m1.vivod();
    m2.sozdanie();
    cout<<"\nVtoriaia matrica: ";
    m2.vivod();
    m3.str=m1.str;
    m3.stb=m2.stb;
    m3.umnogenie(m1,m2);
    cout<<"\nRezultat umnigenia matrica: ";
    m3.vivod();
    scanf("%d");
    return 0;
}