Borderou de evaluare (job #268940)

Compilare: user.cpp: In function ‘int main()’: user.cpp:14:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:15:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:16:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:19:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:78:9: warning: ‘y2’ may be used uninitialized in this function [-Wuninitialized] user.cpp:78:9: warning: ‘y1’ may be used uninitialized in this function [-Wuninitialized] user.cpp:78:9: warning: ‘j’ may be used uninitialized in this function [-Wuninitialized] user.cpp:77:5: warning: ‘x2’ may be used uninitialized in this function [-Wuninitialized] user.cpp:77:5: warning: ‘x1’ may be used uninitialized in this function [-Wuninitialized]