Borderou de evaluare (job #29725)

Compilare: user.cpp: In function ‘void rec(int, int)’: user.cpp:9:22: warning: unused variable ‘cate’ [-Wunused-variable] user.cpp: In function ‘int main()’: user.cpp:53:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:54:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:55:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:59:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘void rec(int, int)’: user.cpp:30:4: warning: ‘o’ may be used uninitialized in this function [-Wuninitialized] user.cpp:29:10: warning: ‘j’ may be used uninitialized in this function [-Wuninitialized]