Borderou de evaluare (job #519558)

Compilare: user.cpp: In function 'int main()': user.cpp:57:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:60:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:69:36: warning: 'to' may be used uninitialized in this function [-Wuninitialized] user.cpp:69:21: warning: 'from' may be used uninitialized in this function [-Wuninitialized]