segm.cpp: In function 'int main()': segm.cpp:27: warning: unused variable 'ic1' segm.cpp:27: warning: unused variable 'ic2' segm.cpp:27: warning: unused variable 'sf1' segm.cpp:27: warning: unused variable 'sf2' segm.cpp:28: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result segm.cpp:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result segm.cpp:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result segm.cpp:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result