Compilare: user.cpp: In function ‘int main()’: user.cpp:92: warning: overflow in implicit constant conversion user.cpp:106: warning: comparison between signed and unsigned integer expressions user.cpp:23: 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 user.cpp:101: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result