Compilare: user.cpp: In function ‘void citeste()’: user.cpp:12: warning: unused variable ‘i’ user.cpp:12: warning: unused variable ‘j’ user.cpp:12: warning: unused variable ‘x’ user.cpp: In function ‘int main()’: user.cpp:76: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:80: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:58: warning: ‘x’ may be used uninitialized in this function