Compilare: main.cpp: In function 'int main()': main.cpp:66:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int aux1 = 1; aux1 <= s.length(); aux1++) ~~~~~^~~~~~~~~~~~~ main.cpp:68:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int aux2 = 1; aux2 <= s.length(); aux2++) ~~~~~^~~~~~~~~~~~~ main.cpp:79:31: warning: array subscript has type 'char' [-Wchar-subscripts] litere[v[i][j]] = pereche{i, j}; ^ main.cpp:90:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s.length(); i++) ~~^~~~~~~~~~~~ main.cpp:92:35: warning: array subscript has type 'char' [-Wchar-subscripts] q.push(pereche{litere[s[i]].x, litere[s[i]].y}); ^ main.cpp:92:51: warning: array subscript has type 'char' [-Wchar-subscripts] q.push(pereche{litere[s[i]].x, litere[s[i]].y}); ^ main.cpp:97:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int lungime = 2; lungime <= s.length(); lungime++) ~~~~~~~~^~~~~~~~~~~~~ main.cpp:99:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i + lungime - 1 <= s.length(); i++) ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'void lee(int, int)': main.cpp:40:32: warning: iteration 4 invokes undefined behavior [-Waggressive-loop-optimizations] int diri = i + dx[d]; ~~~~^ main.cpp:38:27: note: within this loop for (int d = 0; d <= 4; d++) ~~^~~~