showArrWithSnack

#include<iostream>

    using namespace std;

      const int N = 5; //------n
      const int M = 4;


      int main() {
          int a[N][M];
          int right, left, top, bottom;
          int _right = 0, _left = M - 2, _top = N - 2, _bottom = 1;
          int right_ = M, left_ = -1, top_ = 0, bottom_ = N;
          int sum = 0, k = 0;
          bool flag = true;
          int counter = 0;

          for (int i = 0; i < N; i++)
              for (int j = 0; j < M; j++)
                  a[i][j] = ++sum;

          for (int i = 0; i < N; i++) {
              for (int j = 0; j < M; j++)
                  cout << "[" << a[i][j] << "]\t";
              cout << endl;
          }
          cout << endl;
          cout << "---------------------------------" << endl;
          cout << endl;


          while (1) {
              for (right = _right; right < right_; right++) {
                  //moving right
                  cout << "{right}";
                  cout << a[top_][right] << endl;
                  counter++;
              }


              if (!(_right < right_))
                  break;

              for (bottom = _bottom; bottom < bottom_; bottom++) {
                  //moving down
                  cout << "{down}";
                  cout << a[bottom][right_ - 1] << endl;
                  counter++;
              }


              if (!(_bottom < bottom_))
                  break;

              for (left = _left; left > left_; left--) {
                  //moving left
                  cout << "{left}";
                  cout << a[bottom_ - 1][left] << endl;
                  counter++;
              }

              if (!(_left > left_))
                  break;

              for (top = _top; top > top_; top--) {
                  //moving top
                  cout << "{up}";
                  cout << a[top][left_ + 1] << endl;
                  counter++;
              }

              if (!(_top > top_))
                  break;

              _right++;
              _left--;
              _top--;
              _bottom++;
              right_--;
              left_++;
              top_++;
              bottom_--;
              k++;
          }
          cout << "Check sum" << endl;
          cout << counter << endl;
          cout << M*N << endl;


          return 0;
      }