Borderou de evaluare (job #108977)

Compilare: user.cpp: In function ‘int main()’: user.cpp:27:21: warning: unused variable ‘x’ [-Wunused-variable] user.cpp:27:24: warning: unused variable ‘y’ [-Wunused-variable] user.cpp:27:30: warning: unused variable ‘dif’ [-Wunused-variable] user.cpp:24:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:25:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:31:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:37:51: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]