Compilare: user.cpp: In function ‘void fre(long long int)’: user.cpp:37:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] rz=rz+(f[ch]+fc[ch])*dr/8; ^ user.cpp:37:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] rz=rz+(f[ch]+fc[ch])*dr/8; ^ user.cpp:42:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] rz=rz+(f[ch]+fc[ch])*dr/4; ^ user.cpp:42:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] rz=rz+(f[ch]+fc[ch])*dr/4; ^ user.cpp:47:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] rz=rz+(f[ch]+fc[ch])*dr/4*3/2; ^ user.cpp:47:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] rz=rz+(f[ch]+fc[ch])*dr/4*3/2; ^ user.cpp:58:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nc%2==1) rz+=f[ch]; ^ user.cpp:59:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] else rz+=fc[ch]; ^ user.cpp:64:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] rz+=fc[ch]+f[ch]; ^ user.cpp:64:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] rz+=fc[ch]+f[ch]; ^ user.cpp:67:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nc%2==1) rz+=fc[ch]+2*f[ch]; ^ user.cpp:67:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nc%2==1) rz+=fc[ch]+2*f[ch]; ^ user.cpp:68:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] else rz+=f[ch]+2*fc[ch]; ^ user.cpp:68:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] else rz+=f[ch]+2*fc[ch]; ^ user.cpp: In function ‘int main()’: user.cpp:81:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[s[i]]++; ^ user.cpp:82:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] s1[i]=f[s[i]]; ^