Compilare: main.cpp: In function 'int cb(int)': main.cpp:69:12: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] 69 | return last; | ^~~~ main.cpp: In function 'int main()': main.cpp:86:14: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] 86 | a[i] = cb(a[i]); | ~~~~~^~~~~~~~~~