Compilare: user.cpp:14: warning: integer constant is too large for ‘long’ type user.cpp: In function ‘int main()’: user.cpp:14: warning: overflow in implicit constant conversion user.cpp:10: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:13: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result