Compilare: main.cpp: In function 'int do_union(int, int)': main.cpp:41:1: warning: no return statement in function returning non-void [-Wreturn-type] 41 | } | ^ main.cpp: In function 'int main()': main.cpp:49:9: warning: 'cod' may be used uninitialized in this function [-Wmaybe-uninitialized] 49 | if(cod==1){ | ^~ main.cpp:50:31: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] 50 | int rx=do_find(x); | ~~~~~~~^~~ main.cpp:51:23: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] 51 | int ry=do_find(y); | ~~~~~~~^~~