Compilare: user.cpp: In function ‘int main()’: user.cpp:11: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp:12: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp:8: warning: ‘nr1’ may be used uninitialized in this function user.cpp:8: warning: ‘nr2’ may be used uninitialized in this function user.cpp:9: warning: ‘b’ may be used uninitialized in this function