Borderou de evaluare (job #288006)

Compilare: user.cpp: In function 'int main()': user.cpp:13:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:15:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:36:5: warning: 'st' may be used uninitialized in this function [-Wuninitialized] user.cpp:36:5: warning: 'dr' may be used uninitialized in this function [-Wuninitialized] user.cpp:72:9: warning: 'k' may be used uninitialized in this function [-Wuninitialized]