Compilare: user.cpp: In function ‘int main()’: user.cpp:41: warning: unused variable ‘a1’ user.cpp:41: warning: unused variable ‘b1’ user.cpp:46: warning: unused variable ‘a1’ user.cpp:46: warning: unused variable ‘b1’ user.cpp:51: warning: unused variable ‘a1’ user.cpp:51: warning: unused variable ‘b1’ user.cpp:64: warning: unused variable ‘a1’ user.cpp:64: warning: unused variable ‘b1’ user.cpp:69: warning: unused variable ‘a1’ user.cpp:69: warning: unused variable ‘b1’ user.cpp:86: warning: unused variable ‘a1’ user.cpp:86: warning: unused variable ‘b1’ user.cpp:95: warning: unused variable ‘a1’ user.cpp:95: warning: unused variable ‘b1’ user.cpp:112: warning: unused variable ‘a1’ user.cpp:112: warning: unused variable ‘b1’ user.cpp:117: warning: unused variable ‘a1’ user.cpp:117: warning: unused variable ‘b1’ user.cpp:122: warning: unused variable ‘a1’ user.cpp:122: warning: unused variable ‘b1’