drumuri1.cpp: In function 'int main()': drumuri1.cpp:27: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result drumuri1.cpp:28: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result drumuri1.cpp: In function 'void ReadData()': drumuri1.cpp:122: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result drumuri1.cpp:126: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result