Borderou de evaluare (job #216800)

Compilare: user.cpp: In function ‘int main()’: user.cpp:12:11: warning: unused variable ‘j’ [-Wunused-variable] user.cpp:12:19: warning: unused variable ‘st’ [-Wunused-variable] user.cpp:12:22: warning: unused variable ‘dr’ [-Wunused-variable] user.cpp:10:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:36: 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:15:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]