Compilare: main.cpp: In function 'char* GetSolution()': main.cpp:50:73: warning: array subscript has type 'char' [-Wchar-subscripts] while (size > 0 && character < sol[size - 1] && a_freq[sol[size - 1]] >= b_freq[sol[size - 1]] + 1) { ^ main.cpp:50:98: warning: array subscript has type 'char' [-Wchar-subscripts] while (size > 0 && character < sol[size - 1] && a_freq[sol[size - 1]] >= b_freq[sol[size - 1]] + 1) { ^ main.cpp:52:23: warning: array subscript has type 'char' [-Wchar-subscripts] b_freq[sol[size]]++; ^ main.cpp: In function 'void ReadData()': main.cpp:24:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s%s", a, b); ^