poligon4.cpp: In function 'int main()': poligon4.cpp:39: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x poligon4.cpp:39: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x poligon4.cpp:25: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result poligon4.cpp:26: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result poligon4.cpp:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result poligon4.cpp:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result