Compilare: user.cpp: In function ‘int main()’: user.cpp:76:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d\n", &n, &m ) ; ^ user.cpp:81:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%c", &val ) ; ^ user.cpp:103:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "\n" ) ; ^ user.cpp: In function ‘void bordare(int, int)’: user.cpp:63:46: warning: iteration 4u invokes undefined behavior [-Waggressive-loop-optimizations] mat[dir][j][0] = mat[dir][j][m+1] = -2 ; ^ user.cpp:62:28: note: containing loop for (int dir = 0 ; dir <= 4 ; dir ++ ) ^ user.cpp:59:46: warning: iteration 4u invokes undefined behavior [-Waggressive-loop-optimizations] mat[dir][0][j] = mat[dir][n+1][j] = -2 ; ^ user.cpp:58:28: note: containing loop for (int dir = 0 ; dir <= 4 ; dir ++ ) ^ user.cpp: In function ‘int main()’: user.cpp:122:20: warning: ‘yf’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (mat[1][xf][yf] > 0 ) ^ user.cpp:122:20: warning: ‘xf’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:106:23: warning: ‘y2’ may be used uninitialized in this function [-Wmaybe-uninitialized] lee (x2, y2, 0, 0 ) ; /// Pentru percy ^ user.cpp:106:23: warning: ‘x2’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:107:23: warning: ‘y1’ may be used uninitialized in this function [-Wmaybe-uninitialized] lee (x1, y1, 1, 1 ) ; ^ user.cpp:107:23: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized]