Compilare: user.cpp: In function ‘int main()’: user.cpp:63:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (tof[chr]==1) ^ user.cpp:64:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] tof[chr]=0; ^ user.cpp:66:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] tof[chr]=1; ^ user.cpp:68:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<strlen(s); j++) { ^ user.cpp:79:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] tmp[++k]='0' + tof[s[j]]; ^ user.cpp: In function ‘bool parf()’: user.cpp:55:12: warning: ‘res’ may be used uninitialized in this function [-Wmaybe-uninitialized] return res; ^