Compilare: user.cpp: In function ‘int calccost(char*, int&)’: user.cpp:21:27: warning: unused variable ‘j’ [-Wunused-variable] unsigned short int i, j, q; ^ user.cpp: In function ‘int main()’: user.cpp:122:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<so.size();++i) ^ user.cpp:145:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<so2.size();++i) ^