Compilare: user.cpp: In function ‘int main()’: user.cpp:13: warning: suggest parentheses around ‘-’ in operand of ‘&’ user.cpp:14: warning: suggest parentheses around ‘-’ inside ‘>>’ user.cpp:14: warning: suggest parentheses around ‘-’ inside ‘>>’ user.cpp:15: warning: suggest parentheses around ‘-’ inside ‘>>’ user.cpp:15: warning: suggest parentheses around ‘-’ inside ‘>>’ user.cpp:8: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result