Borderou de evaluare (job #414242)

Compilare: user.cpp: In function ‘int main()’: user.cpp:55:13: warning: unused variable ‘nod’ [-Wunused-variable] user.cpp:55:26: warning: unused variable ‘r’ [-Wunused-variable] user.cpp:55:40: warning: unused variable ‘l’ [-Wunused-variable] user.cpp:30:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:31:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:33:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:36:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]