Borderou de evaluare (job #26808)

Compilare: user.cpp: In function ‘int main()’: user.cpp:6:15: warning: unused variable ‘k’ [-Wunused-variable] user.cpp:6:19: warning: unused variable ‘x’ [-Wunused-variable] user.cpp:6:26: warning: unused variable ‘y’ [-Wunused-variable] user.cpp:4:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:5:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:3:5: warning: ‘c3’ may be used uninitialized in this function [-Wuninitialized]