robot3.cpp: In function 'int main()': robot3.cpp:112: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result robot3.cpp:113: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result robot3.cpp:114: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result robot3.cpp:119: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result robot3.cpp:125: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result robot3.cpp:111: warning: 'ndmin' may be used uninitialized in this function