Compilare: main.cpp: In function 'int main()': main.cpp:21:14: warning: unused variable 'exista' [-Wunused-variable] 21 | bool exista = false; | ^~~~~~ main.cpp:52:17: warning: 'fr' may be used uninitialized in this function [-Wmaybe-uninitialized] 52 | ++fr; | ^~~~ main.cpp:40:14: warning: 'nr' may be used uninitialized in this function [-Wmaybe-uninitialized] 40 | v[j] = nr; | ~~~~~^~~~