Compilare: user.cpp: In function ‘int main()’: user.cpp:70:31: warning: ‘pereche1.per::ind1’ may be used uninitialized in this function [-Wmaybe-uninitialized] res -= v[pereche1.ind1]; ^ user.cpp:71:31: warning: ‘pereche1.per::ind2’ may be used uninitialized in this function [-Wmaybe-uninitialized] res -= v[pereche1.ind2]; ^ user.cpp:72:31: warning: ‘pereche1.per::ind3’ may be used uninitialized in this function [-Wmaybe-uninitialized] res -= v[pereche1.ind3]; ^