Compilare: user.cpp: In function ‘int query(int)’: user.cpp:37:12: warning: ‘sum’ may be used uninitialized in this function [-Wmaybe-uninitialized] return sum; ^ user.cpp: In function ‘int main()’: user.cpp:49:45: warning: ‘sum’ may be used uninitialized in this function [-Wmaybe-uninitialized] int sum=v[i].b+query(n)-query(v[i].b); ^ user.cpp:49:23: warning: ‘sum’ may be used uninitialized in this function [-Wmaybe-uninitialized] int sum=v[i].b+query(n)-query(v[i].b); ^