Compilare: main.cpp: In function 'int main()': main.cpp:13:9: warning: unused variable 'len' [-Wunused-variable] 13 | int len = 0; | ^~~ main.cpp:14:9: warning: unused variable 'aux' [-Wunused-variable] 14 | int aux = 0; | ^~~ main.cpp:15:9: warning: unused variable 'pos' [-Wunused-variable] 15 | int pos = -1; | ^~~