kodzik

#include <iostream>

using namespace std;

int W;
int K;

int main()
{
    cout << "Podaj liczbe wierszy: "; cin >> W;
    cout << "Podaj liczbe kolumn: "; cin >> K;
    cout << endl;

    cout << "1." << endl;
    for (int i = 0; i < W; ++i) {
        for (int j = 0; j < K; ++j) {
            if (i == 0 || i % 2 == 0) {
                cout << "x";
            }
            else {
                cout << ".";
            }
        } cout << endl;
    }

    cout << endl;
    cout << "2." << endl;
    for (int i = 0; i < W; ++i) {
        for (int j = 0; j < K; ++j) {
            cout << "x.";
        }   cout << endl;
    }

    cout << endl;;
    cout << "3." << endl;
    for (int i = 0; i < W; ++i) {
        for (int j = 0; j < K; ++j) {
            if (i <= j) {
                cout << "x";
            }
            else {
                cout << ".";
            }
        }cout << endl;
    }



    cout << endl;
    cout << "4." << endl;



    cout << endl;
    cout << "5." << endl;
    for (int i = 0; i < W; ++i) {
        for (int j = 0; j < K; ++j) {
            if (i == 0 || i % 2 == 0) {
                cout << "x.";
            }
            else {
                cout << ".x";
            }
        } cout << endl;
    }