Compilare: main.cpp: In function 'int main()': main.cpp:19:14: warning: unused variable 'exista' [-Wunused-variable] 19 | bool exista = false; | ^~~~~~ main.cpp:53:17: warning: 'fr' may be used uninitialized in this function [-Wmaybe-uninitialized] 53 | ++fr; | ^~~~ main.cpp:38:14: warning: 'nr' may be used uninitialized in this function [-Wmaybe-uninitialized] 38 | v[j] = nr; | ~~~~~^~~~