Compilare: user.cpp: In function ‘int main()’: user.cpp:31:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(v[i+1]<v[i]&&i+1<v.size()) ^ user.cpp:38:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i+1==v.size() ) break; ^ user.cpp:40:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(v[i+1]>v[i]&&i+1<v.size()) ^ user.cpp:47:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i+1==v.size()) break; ^