Compilare: user.cpp: In function ‘int main()’: user.cpp:42: warning: suggest parentheses around comparison in operand of ‘|’ user.cpp:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result