Borderou de evaluare (job #123168)

Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:30:4: error: ‘dr’ was not declared in this scope user.cpp:9:10: warning: unused variable ‘x’ [-Wunused-variable] user.cpp:19:6: warning: unused variable ‘j’ [-Wunused-variable] user.cpp:19:8: warning: unused variable ‘ini’ [-Wunused-variable] user.cpp:7:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:10:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:13:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]