robot3.cpp: In function 'void bf(int, int, int (*)[1001][4])': robot3.cpp:61: warning: unused variable 'actdir' robot3.cpp: In function 'void cit(int&)': robot3.cpp:83: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result robot3.cpp:86: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result robot3.cpp:90: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result robot3.cpp: In function 'int main()': robot3.cpp:97: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result robot3.cpp:98: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result