Valera lab

foo.cpp

#include <iostream>

using namespace std;

int main()
{
    // Data
    int **matrix, size, counter = 0, max;
    int x, y;
    bool up = true;

    cout << "Enter matrix dimension: Size = ";
    cin >> size;

    // Create matrix
    matrix = new int*[size];
    for (int i = 0; i < size; i++) {
        matrix[i] = new int[size];
    }

    // start point
    x = y = max = size - 1;

    while (counter != size * size) {
        matrix[y][x] = ++counter;

        if (up) {
            x++; y--;
            if (x > max && y >= 0) { x--; up = !up; }
            if (y < 0) { x-=2; y = 0; up = !up; }
        } else {
            x--; y++;
            if (y > max && x >= 0) { y--; up = !up; }
            if (x < 0) { y-=2; x = 0; up = !up; }
        }
    }

    for (int i = 0; i < size; i++) {
        for (int j = 0; j < size; j++) {
            printf("%3d ", matrix[i][j]);
        }
        cout << endl;
    }

    return 0;
}