Compilare: user.cpp: In function ‘int main()’: user.cpp:62:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] gr[cuv[i]]=i; //in acest vector "grupez" literele (fiecarei litere i corespunde o pozitie,la care adaug 1, deoarece am inceput de la i=0 ^ user.cpp:80:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] x[gr[a[i][j]]]=i; //coordonatele fiecarei litere in matrice ^ user.cpp:81:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] y[gr[a[i][j]]]=j; ^