Compilare: user.cpp:13: warning: non-local variable ‘<anonymous struct> x’ uses anonymous type user.cpp:13: warning: non-local variable ‘<anonymous struct> y’ uses anonymous type user.cpp:13: warning: non-local variable ‘<anonymous struct> vp [199]’ uses anonymous type user.cpp: In function ‘void read()’: user.cpp:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:52: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:28: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result