//левый верхний по часовой одномерный
//#include "pch.h"
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int const strs = 7;
int const clmns = 3;


void init_m(int A[], int strs, int clmns)
{
	for (int i = 0; i < strs; i++)
	{
		for (int j = 0; j < clmns; j++)
		{
			A[i*clmns + j] = rand() % 20;
		}
	}
}

void print_m(int A[], int strs, int clmns)
{
	for (int i = 0; i < strs; i++)
	{
		for (int j = 0; j < clmns; j++)
		{
			printf("%4d", A[i*clmns + j]);
		}
		printf("\n");
	}
	printf("\n");
}

void left_down(int A[][clmns],int strs)
{
	int i, j;
	int limit = strs * clmns;
	int left = 0;
	int right = clmns - 1;
	int up = 0;
	int down = strs - 1;
	int Strs = strs;
	int Clmns = clmns;

	while ((limit > 0) && (left <= right) && (up <= down))
    {
		for (i = up; i < down; i++)
        {
			printf("%d ", A[i][left]);
			limit--;
			if (limit == 0)
            {
			     break;
            }
		}
		for (j = left; j < right; j++)
            {
			printf("%d ", A[down][j]);
			limit--;
			if (limit == 0)
                {
			     break;
                }

		}
		for (i = down; i > up; i--)
        {
			printf("%d ", A[i][right]);
			limit--;
			if (limit == 0)
            {
			    break;
            }
		}
		for (j = right; j > left; j--)
        {
			printf("%d ", A[up][j]);
			limit--;
			if (limit == 0)
            {
			    break;
            }
		}
		left++;
		right--;
		up++;
		down--;
	}
	if(limit == 1)
        printf("%d ", A[Strs/2][Clmns/2]);
}
int main()
{
	srand(12345);

	int* A = (int*)malloc(clmns * strs * sizeof(int));
	init_m(A, strs, clmns);
	print_m(A, strs, clmns);
	left_down(A,strs);
	return 0;
}