Compilare: main.cpp: In function 'int mn()': main.cpp:51:12: warning: 'indx' may be used uninitialized in this function [-Wmaybe-uninitialized] return indx; ^~~~ main.cpp: In function 'void prim(int)': main.cpp:66:15: warning: 'indx' may be used uninitialized in this function [-Wmaybe-uninitialized] mst[u]=true; ~~~~~~^~~~~