#include <iostream>
#include <string>
#include <ctime>
#include <iomanip>
using namespace std;
int getInteger(const char* text)
{
bool isError = false;
std::string s;
int number = 0;
do {
isError = false;
std::cout << text << std::endl;
std::cin >> s;
for (size_t i = 0; i < s.length(); i++)
{
if ((int)(s[i]) < 0 || !isdigit(s[i])) //if (!(s[i] >= '0' && s[i] <= '9'))
{
isError = true;
break;
}
}
if (!isError)
number = atoi(s.c_str());
} while (isError || number <= 0);
return number;
}
void task907()
{
cout << "Task 907" << endl;
const int rows = 4;
const int cols = 5;
int summ = 0;
int array[rows][cols];
for (int y = 0; y < rows; y++)
{
for (int x = 0; x < cols; x++)
{
cout << (array[y][x] = rand() % 5) << " ";
}
cout << endl;
}
for (int i = -rows + 1; i < rows; i++)
{
for (int y = 0; y < rows; y++)
{
for (int x = 0; x < cols; x++)
{
if (y + i == x)
{
summ += array[y][x];
}
}
}
cout << endl << "Summ = " << summ << " : " << i << " diagonal" << endl;
summ = 0;
}
}
void task1047()
{
cout << "Task 1047" << endl;
const int ColsRows = 4;
int arr[ColsRows][ColsRows];
cout << "Before" << endl;
for (int i = 0; i < ColsRows; i++)
{
for (int j = 0; j < ColsRows; j++)
{
cout << (arr[i][j] = rand() % 10) << " ";
}
cout << endl;
}
cout << endl << endl;
for (int y = 0; y < ColsRows; y++)
{
int temp = arr[y][0];
for (int x = 0; x < ColsRows / 2; x++)
{
arr[y][0] = arr[y][ColsRows - 2];
}
arr[y][ColsRows - 2] = temp;
}
cout << "After (A)" << endl;
for (int i = 0; i < ColsRows; i++)
{
for (int j = 0; j < ColsRows; j++)
{
cout << arr[i][j] << " ";
}
cout << endl;
}
cout << endl << endl;
for (int i = 0; i < ColsRows; i++)
{
int temp = arr[1][i];
for (int j = 0; j < ColsRows / 2; j++)
{
arr[1][i] = arr[ColsRows - 1][i];
}
arr[ColsRows - 1][i] = temp;
}
cout << "After (B)" << endl;
for (int i = 0; i < ColsRows; i++)
{
for (int j = 0; j < ColsRows; j++)
{
cout << arr[i][j] << " ";
}
cout << endl;
}
cout << endl << endl;
}
void task942()
{
cout << "Task 942" << endl << "Matrix before" << endl;
const int row = 6;
const int column = 7;
int massiv[row][column];
for (int y = 0; y <row; y++)
{
for (int x = 0; x < column; x++)
{
cout << (massiv[y][x] = rand() % 10) << " ";
}
cout << endl;
}
cout << endl << "After" << endl;
for (int y = 0; y < row; y++)
{
for (int x = 0; x < column; x++)
{
if (y + x == ( column < row?column : row) - 1)
{
cout << setw(3) << (massiv[y][x] = 100) << " ";
}
else
{
cout << setw(3) << massiv[y][x] << " ";
}
}
cout << endl;
}
}
void task1012()
{
cout << "Task 1012" << endl;
const int size = 4;
int arr[size][size];
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
cout << (arr[i][j] = rand() % 2) << " ";
}
cout << endl;
}
bool equil = true;
int row = 0;
for ( row = 0; row < size; row++)
{
for (int x = 0; x < size; x++)
{
if (arr[ row][x] == arr[x][row])
{
equil = true;
}
else
{
equil = false;
break;
}
}
}
cout << endl;
if (equil)
{
cout << " Equil k-row and k-column = " << row << endl;
}
cout << endl;
}
void task977()
{
cout << "Task 977" << endl << endl;
const int n = 8;
int array[n][n] = {};
int count = 1;
for (int i = 0; i < n / 2; i++)
{
for (int y = i; y < n - i; y++)
{
array[i][y] = count++;
}
for (int y = i + 1; y < n - i; y++)
{
array[y][n - 1 - i] = count++;
}
for (int x = n - 1 - i; x > 0 + i; x--)
{
array[n - 1 - i][x - 1] = count++;
}
for (int y = n - 1 - i; y > 1 + i; y--)
{
array[y - 1][0 + i] = count++;
}
}
if (n % 2 == 1)
{
array[n / 2][n / 2] = n * n;
}
for (int y = 0; y < n; y++)
{
for (int x = 0; x < n; x++)
{
cout << array[y][x] << "\t";
}
cout << endl;
}
}
int main()
{
srand(time(0));
int c = 0;
while (c != 1)
{
int inputnumber = getInteger("Choose task ( 907, 942, 977, 1012, 1047) ");
cout << endl;
switch (inputnumber)
{
case 907:
task907();
break;
case 942:
task942();
break;
case 977:
task977();
break;
case 1012:
task1012();
break;
case 1047:
task1047();
break;
}
}
}
