Borderou de evaluare (job #287994)

Compilare: user.cpp: In function 'int main()': user.cpp:10:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] 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:26:5: warning: 'st' is used uninitialized in this function [-Wuninitialized] user.cpp:26:5: warning: 'dr' is used uninitialized in this function [-Wuninitialized] user.cpp:62:9: warning: 'k' may be used uninitialized in this function [-Wuninitialized]