Compilare: user.cpp: In function ‘int main()’: user.cpp:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:47: warning: ‘m’ may be used uninitialized in this function user.cpp:47: warning: ‘medx’ may be used uninitialized in this function user.cpp:47: warning: ‘medy’ may be used uninitialized in this function user.cpp:47: warning: ‘ca’ may be used uninitialized in this function