sotron1.cpp: In function 'int main()': sotron1.cpp:106: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result sotron1.cpp:107: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result sotron1.cpp:109: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result sotron1.cpp:112: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result sotron1.cpp: In function 'void lee(int, int, int, int, int)': sotron1.cpp:66: warning: 'ndir' may be used uninitialized in this function sotron1.cpp: In function 'int main()': sotron1.cpp:108: warning: 'sx' may be used uninitialized in this function sotron1.cpp:108: warning: 'sy' may be used uninitialized in this function