Compilare: user.cpp: In function ‘void markCells(int, int, int)’: user.cpp:12:32: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] if ((!((a[i][j] >> 3) & 1) == 1) && !m[i - 1][j]) markCells(i - 1 , j, nr); ^~ user.cpp:13:32: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] if ((!((a[i][j] >> 2) & 1) == 1) && !m[i][j + 1]) markCells(i, j + 1, nr); ^~ user.cpp:14:32: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] if ((!((a[i][j] >> 1) & 1) == 1) && !m[i + 1][j]) markCells(i + 1, j, nr); ^~ user.cpp:15:25: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] if ((!(a[i][j] & 1) == 1) && !m[i][j - 1]) markCells(i, j - 1, nr); ^~ user.cpp: In function ‘int main()’: user.cpp:24:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &quest, &n); ^ user.cpp:27:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i][j]); ^