Compilare: main.cpp: In function 'char cod(char)': main.cpp:24:9: warning: variable 'c' set but not used [-Wunused-but-set-variable] 24 | int c; | ^ main.cpp: In function 'long long int divimp2(long long int, long long int, int, char)': main.cpp:87:22: warning: array subscript has type 'char' [-Wchar-subscripts] 87 | return fr[cod(ch)][n]; | ~~~^~~~ main.cpp:97:27: warning: array subscript has type 'char' [-Wchar-subscripts] 97 | return d[nr-1][cod(ch)]+divimp2(n-p/4, p/4, nr-1, invers(ch)); | ~~~^~~~ main.cpp:102:27: warning: array subscript has type 'char' [-Wchar-subscripts] 102 | return d[nr-1][cod(ch)]+d[nr-1][cod(invers(ch))]+divimp2(n-p/2, p/4, nr-1, invers(ch)); | ~~~^~~~ main.cpp:102:44: warning: array subscript has type 'char' [-Wchar-subscripts] 102 | return d[nr-1][cod(ch)]+d[nr-1][cod(invers(ch))]+divimp2(n-p/2, p/4, nr-1, invers(ch)); | ~~~^~~~~~~~~~~~ main.cpp:106:27: warning: array subscript has type 'char' [-Wchar-subscripts] 106 | return d[nr-1][cod(ch)]+2*d[nr-1][cod(invers(ch))]+divimp2(n-3*p/4, p/4, nr-1, ch); | ~~~^~~~ main.cpp:106:46: warning: array subscript has type 'char' [-Wchar-subscripts] 106 | return d[nr-1][cod(ch)]+2*d[nr-1][cod(invers(ch))]+divimp2(n-3*p/4, p/4, nr-1, ch); | ~~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:115:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] 115 | fin>>x+1; | ~^~ main.cpp:118:15: warning: array subscript has type 'char' [-Wchar-subscripts] 118 | fr[cod(x[i])][i]++; | ~~~^~~~~~ main.cpp:119:17: warning: array subscript has type 'char' [-Wchar-subscripts] 119 | d[0][cod(x[i])]++; | ~~~^~~~~~ main.cpp:145:23: warning: 'ok' may be used uninitialized in this function [-Wmaybe-uninitialized] 145 | char ch=divimp(n, p, ok); | ~~~~~~^~~~~~~~~~