Compilare: user.cpp: In function ‘bool try_erase(point*, const int&, const int&)’: user.cpp:38: warning: unused variable ‘j’ user.cpp:38: warning: unused variable ‘Len’ user.cpp: In function ‘bool test(const int&)’: user.cpp:65: warning: unused variable ‘i’ user.cpp:65: warning: unused variable ‘j’ user.cpp:66: warning: unused variable ‘p2’ user.cpp: In function ‘int main()’: user.cpp:119: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:120: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:121: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:132: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result