Compilare: main.cpp: In function 'void back()': main.cpp:26:19: warning: unused variable 'i' [-Wunused-variable] 26 | long long int i=0; | ^ main.cpp: In function 'int main()': main.cpp:142:28: warning: 'startt' may be used uninitialized in this function [-Wmaybe-uninitialized] 142 | cout<<endl<<startt+1<<" "<<endd+1; | ^ main.cpp:142:41: warning: 'endd' may be used uninitialized in this function [-Wmaybe-uninitialized] 142 | cout<<endl<<startt+1<<" "<<endd+1; | ^