robot3.cpp: In function 'void bf(int, int, int (*)[1001][4])': robot3.cpp:50: warning: unused variable 'actdir' robot3.cpp: In function 'int main()': robot3.cpp:63: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result robot3.cpp:64: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result robot3.cpp:65: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result robot3.cpp:74: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result robot3.cpp:82: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result /tmp/cc50jTvS.o: In function `main': robot3.cpp:(.text+0x3ab): warning: the `gets' function is dangerous and should not be used.