Compilare: user.cpp: In function ‘char canMerge(int, int, int)’: user.cpp:56:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (!isMagic[c1] || !isMagic[c2]) ^ user.cpp:56:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (!isMagic[c1] || !isMagic[c2]) ^ user.cpp:58:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] int msk = 7 & (~isMagic[c1]) & (~isMagic[c2]); ^ user.cpp:58:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] int msk = 7 & (~isMagic[c1]) & (~isMagic[c2]); ^ user.cpp:63:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (freq[rz] <= freq[c1] || freq[rz] <= freq[c2]) ^ user.cpp:63:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (freq[rz] <= freq[c1] || freq[rz] <= freq[c2]) ^ user.cpp:63:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (freq[rz] <= freq[c1] || freq[rz] <= freq[c2]) ^ user.cpp:63:52: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (freq[rz] <= freq[c1] || freq[rz] <= freq[c2]) ^ user.cpp:67:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (freq[rz] <= freq[c1] && freq[rz] <= freq[c2]) ^ user.cpp:67:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (freq[rz] <= freq[c1] && freq[rz] <= freq[c2]) ^ user.cpp:67:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (freq[rz] <= freq[c1] && freq[rz] <= freq[c2]) ^ user.cpp:67:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (freq[rz] <= freq[c1] && freq[rz] <= freq[c2]) ^ user.cpp: In function ‘void adjust(char, char, char)’: user.cpp:73:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] --freq[c1], --freq[c2], ++freq[r]; ^ user.cpp:73:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] --freq[c1], --freq[c2], ++freq[r]; ^ user.cpp:73:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] --freq[c1], --freq[c2], ++freq[r]; ^ user.cpp: In function ‘bool query_aux(int)’: user.cpp:79:55: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if (rez = canMerge(t, u = physical[t].prv, impose)) {