Compilare: main.cpp: In function 'int main()': main.cpp:17:9: warning: unused variable 'cnt1' [-Wunused-variable] 17 | int cnt1=0, cnt2=0, cnt3=0, cnt4=0; | ^~~~ main.cpp:17:17: warning: unused variable 'cnt2' [-Wunused-variable] 17 | int cnt1=0, cnt2=0, cnt3=0, cnt4=0; | ^~~~ main.cpp:17:25: warning: unused variable 'cnt3' [-Wunused-variable] 17 | int cnt1=0, cnt2=0, cnt3=0, cnt4=0; | ^~~~ main.cpp:17:33: warning: unused variable 'cnt4' [-Wunused-variable] 17 | int cnt1=0, cnt2=0, cnt3=0, cnt4=0; | ^~~~