Compilare: user.cpp: In function ‘void BFS()’: user.cpp:57:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int iter = 0; iter < strlen(Coords); ++iter) ^ user.cpp:56:15: warning: unused variable ‘iv’ [-Wunused-variable] int i, j, iv, jv; ^ user.cpp:56:19: warning: unused variable ‘jv’ [-Wunused-variable] int i, j, iv, jv; ^ user.cpp: In function ‘int Direction(char)’: user.cpp:89:1: warning: control reaches end of non-void function [-Wreturn-type] }; ^