Compilare: user.cpp: In function ‘void add(char*, int)’: user.cpp:21:14: warning: unused variable ‘t’ [-Wunused-variable] int i, t = 0; ^ user.cpp: In function ‘void subst(char*, int)’: user.cpp:58:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(A[A[0]]==0) ^ user.cpp: In function ‘void posibilitate(long long unsigned int, long long unsigned int)’: user.cpp:116:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘int main()’: user.cpp:141:9: warning: unused variable ‘i’ [-Wunused-variable] int i,t; ^