Compilare: user.cpp: In function ‘bool find(int)’: user.cpp:13:2: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (; x!=i; parent[x]=i, x=j); ^ user.cpp: In function ‘int main()’: user.cpp:13:2: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:8:8: note: ‘j’ was declared here int i,j; ^ user.cpp:13:2: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (; x!=i; parent[x]=i, x=j); ^ user.cpp:8:8: note: ‘j’ was declared here int i,j; ^ user.cpp:13:2: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (; x!=i; parent[x]=i, x=j); ^ user.cpp:8:8: note: ‘j’ was declared here int i,j; ^ user.cpp:13:2: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (; x!=i; parent[x]=i, x=j); ^ user.cpp:8:8: note: ‘j’ was declared here int i,j; ^