Compilare: main.cpp: In function 'int main()': main.cpp:20:31: warning: unused variable 'a' [-Wunused-variable] 20 | unsigned long long int n, a, i, p=1, nr; | ^ main.cpp:20:34: warning: unused variable 'i' [-Wunused-variable] 20 | unsigned long long int n, a, i, p=1, nr; | ^ main.cpp:20:37: warning: unused variable 'p' [-Wunused-variable] 20 | unsigned long long int n, a, i, p=1, nr; | ^ main.cpp:20:42: warning: unused variable 'nr' [-Wunused-variable] 20 | unsigned long long int n, a, i, p=1, nr; | ^~