Compilare: user.cpp:40: warning: this decimal constant is unsigned only in ISO C90 user.cpp: In function 'int main()': user.cpp:32: warning: unused variable 'nr2' user.cpp:32: warning: unused variable 'nr5' user.cpp:33: warning: unused variable 't' user.cpp:33: warning: unused variable 'y' user.cpp: In function 'long int caut_bin(long int, long int, long int)': user.cpp:29: warning: control reaches end of non-void function