Zad12

#include <iostream>
#include <cstdlib>
#include <ctime>
#include <windows.h>
#include <iomanip>

using namespace std;

int main()
{
    int w, k;
    int suma = 0;
    do
    {
        cout << "Ile wierszy:" << endl;
        cin >> w;
        system("cls");
    }
    while(w<1);
    do
    {
        cout << "Ile kolumn:" << endl;
        cin >> k;
        system("cls");
    }
    while(k<1);
    int matrix[w][k];
    srand(time(NULL));
    for(int i=0; i<w; i++)
    {
        for(int j=0; j<k; j++)
        {
            matrix[i][j]=rand()%100+1;
            cout << setw(3) << matrix[i][j] << " ";
            suma = suma + matrix[i][j];
        }
        cout << endl;
    }
    cout << "Suma elementow w macierzy: " << suma << endl;
    cout << "Ilosc elementow w macierzy: " << k*w << endl;
    cout << "Srednia elementow w macierzy: " << suma/(k*w) << endl;

    return 0;
}