matrixes

#include <iostream>
#include <ctime>
#include <iomanip>
using namespace std;
const int x = 5;
const int y = 6;
const int m = 10;
const int n = 20;
const int k = 30;
const int a = 10;
const int b = 10;
int M3[m][n];
int M6[x][y];
int M8[a][b];

void multiply(int M3[m][n],int M1[m][k],int M2[k][n], unsigned int r, unsigned int c, unsigned int l)
{
    for (unsigned int r =0; r < m ; r++ )
    {
        for (unsigned int c = 0 ; c<n; c++)
        {
            for(unsigned int l=0; l<k; l++)
            {
                M3[r][c] += M1[r][l]*M2[l][c];
            }
        }
    }
}

void printMultiply(int M3[m][n],unsigned int r, unsigned int c)
{
    for (unsigned int r = 0; r<m; r++)
    {
        for(unsigned int c=0;c<n;c++)
        {
            cout<< setw(2);
            cout << M3[r][c];
        }
    cout << endl;
    }
}

void printMatrix(int M1[m][k],unsigned int r,unsigned int c)
{
    for (unsigned int r = 0; r<m; r++)
    {
        for(unsigned int c=0;c<k;c++)
        {
            cout << setw(2);
            cout << M1[r][c];
        }
    cout << endl;
    }
}

void printMatrix2(int M2[k][n], unsigned int r, unsigned int c)
{
    for (unsigned int r = 0; r<k; r++)
    {
        for(unsigned int c=0;c<n;c++)
        {
            cout<<setw(2);
            cout << M2[r][c];
        }
    cout << endl;
    }
}

void printMatrix4(int M4[x][y], unsigned int r, unsigned int c)
{
    for (unsigned int r = 0; r<x; r++)
    {
        for(unsigned int c=0;c<y;c++)
        {
            cout<<setw(2);
            cout << M4[r][c];
        }
    cout << endl;
    }
}

void printMatrix5(int M5[x][y], unsigned int r, unsigned int c)
{
    for (unsigned int r = 0; r<x; r++)
    {
        for(unsigned int c=0;c<y;c++)
        {
            cout<<setw(2);
            cout << M5[r][c];
        }
    cout << endl;
    }
}

void SOUCET(int M6[x][y],int M4[x][y], int M5[x][y], unsigned int r, unsigned int c)
{
    for (unsigned int r = 0; r<x; r++)
        for(unsigned int c=0; c<y; c++)
        {
            M6[r][c]=M4[r][c]+M5[r][c];
        }
}

void printSoucet(int M6[x][y], unsigned int r, unsigned int c)
{
    for (unsigned int r =0; r<x; r++)
    {
        for (unsigned int c=0; c<y; c++)
        {
            cout<<setw(2);
            cout << M6[r][c];
        }
    cout << endl;
    }
}

void printMatrix7(int M7[m][m], unsigned int r, unsigned int c)
{
    for (unsigned int r = 0; r<m; r++)
    {
        for (unsigned int c = 0; c<m; c++)
        {
            cout<<setw(2);
            cout << M7[r][c];
        }
    cout << endl;
    }
}

void TRANSPOSSED(int M8[a][b], int M7[a][b], unsigned int r, unsigned int c)
{
    for (unsigned int r = 0; r<m; r++)
    {
        for (unsigned int c= 0; c<m; c++)
        {
            M8[r][c]=M7[c][r];
        }
    }
}

void printTRANSPOSSED(int M8[a][b], unsigned int r, unsigned int c)
{
    for  (unsigned int r=0; r<a; r++)
    {
        for (unsigned int c=0; c<b; c++)
        {
            cout<<setw(2);
            cout << M8[r][c];
        }
    cout << endl;
    }
}

void upperTriang(int M7[a][b], unsigned r, unsigned c)
{
    for (unsigned int r=0; r < a; r++)
    {
        for (unsigned int c=0; c< b ; c++)
        {
            if (c>r)
            {
                cout<<setw(2)<< M7[r][c];
            }
            else
            {
            cout <<setw(2) << ' ';
            }
        }
        cout << endl;
    }
}

void lowerTriang(int M7[a][b], unsigned r, unsigned c)
{
    for (unsigned int r=0; r < a; r++)
    {
        for (unsigned int c=0; c< b ; c++)

        {
            if (c<r)
            {
                cout<<setw(2)<< M7[r][c];
            }
            else
            {
            cout <<setw(2) << ' ';
            }
        }
        cout << endl;
    }
}

void rotateBYdiagonal(int M7[a][b], unsigned int r, unsigned int c)
{
    for (unsigned int r=0; r<a; r++)
    {
        for (unsigned int c=0; c<b; c++)
        {
            if (c != r)
            {
                cout << setw(2) << M7[c][r];
            }
            else
            {
                cout<< setw(2) << M7[r][c];
            }
        }
        cout << endl;
    }
}

void diagonal(int M7[a][b], unsigned r, unsigned c)
{
    for (unsigned int r=0; r < a; r++)
    {
        for (unsigned int c=0; c< b ; c++)
        {
            if (c==r)
            {
                cout<<setw(2)<< M7[r][c];
            }
            else
            {
                cout<<setw(2)<< ' ';
            }
        }
        cout << endl;
    }
}

int main()
{
    int M1[m][k];
    int M2[k][n];
    int M4[x][y];
    int M5[x][y];
    int M7[m][m];
    for (unsigned int i=0; i < m ; i++)
        for (unsigned int j=0; j < k; j++)
            {
                M1[i][j]=2;
            }
    for (unsigned int i=0; i < k ; i++)
        for (unsigned int j=0; j < n; j++)
            {
                M2[i][j]=1;
            }
    for (unsigned int i=0; i < x ; i++)
         for (unsigned int j=0; j < y; j++)
            {
                M4[i][j]=6;
            }
    for (unsigned int i=0; i < x ; i++)
        for (unsigned int j=0; j < y; j++)
            {
                M5[i][j]=5;
            }
    for (unsigned int i=0; i < m ; i++)
        for (unsigned int j=0; j < m; j++)
            {
                M7[i][j] = rand()%10;
            }
    multiply(M3,M1,M2,m,n,k);
    printMatrix(M1,m,k);
    printMatrix2(M2,k,n);
    printMultiply(M3,m,n);
    printMatrix4(M4,x,y);
    printMatrix5(M5,x,y);
    SOUCET(M6,M4,M5,x,y);
    printSoucet(M6,x,y);
    printMatrix7(M7,a,b);
    cout << endl;
    TRANSPOSSED(M8,M7,a,b);
    printTRANSPOSSED(M8,a,b);
    cout << endl;
    upperTriang(M7,a,b);
    cout << endl;
    lowerTriang(M7,a,b);
    cout << endl;
    diagonal(M7,a,b);
    cout << endl;
    rotateBYdiagonal(M7,a,b);
return 0;
}