Compilare: user.cpp: In function ‘bool can(int)’: user.cpp:23:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(g[c] == f[c] && f[c] > 0) ^ user.cpp:23:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(g[c] == f[c] && f[c] > 0) ^ user.cpp:23:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(g[c] == f[c] && f[c] > 0) ^ user.cpp: In function ‘int main()’: user.cpp:34:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[s[i]]++; ^ user.cpp:37:9: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(f[c]) ^ user.cpp:48:7: warning: array subscript has type ‘char’ [-Wchar-subscripts] g[c] = 0; ^ user.cpp:51:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(f[s[i]] > 0) { ^ user.cpp:52:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] g[s[i]]++; ^ user.cpp:55:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(f[s[i]] - g[s[i]] == 0) ^ user.cpp:55:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(f[s[i]] - g[s[i]] == 0) ^ user.cpp:63:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[s[i]]--; ^ user.cpp:65:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[s[next]] = 0; ^ user.cpp:41:6: warning: unused variable ‘cnt’ [-Wunused-variable] int cnt = 0; ^