Compilare: user.cpp:9: warning: non-local variable ‘<anonymous struct> a [400]’ uses anonymous type user.cpp:19: warning: non-local variable ‘<anonymous struct> x [400]’ uses anonymous type user.cpp: In function ‘void citire()’: user.cpp:22: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result