Compilare: main.cpp: In function 'int verifica()': main.cpp:91:14: warning: this 'else' clause does not guard... [-Wmisleading-indentation] } else ^~~~ main.cpp:92:20: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' nu=-1; break; ^~~~~ main.cpp: In function 'int main()': main.cpp:112:6: warning: unused variable 'nu' [-Wunused-variable] int nu=0; ^~