Compilare: main.cpp: In function 'int main()': main.cpp:95:10: warning: 'second' may be used uninitialized in this function [-Wmaybe-uninitialized] 95 | fprintf( fout, "%d %d %d", maxi, first, second ); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:95:10: warning: 'first' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:52:6: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized] 52 | dfs( root, 0 ); | ~~~^~~~~~~~~~~