arce.cpp: In function 'int main()': arce.cpp:28: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x arce.cpp:28: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x arce.cpp:30: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x arce.cpp:30: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x arce.cpp:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result arce.cpp:17: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result arce.cpp:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result arce.cpp:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result In file included from /usr/include/stdio.h:910, from /usr/include/c++/4.4/cstdio:45, from arce.cpp:1: In function 'char* fgets(char*, int, FILE*)', inlined from 'int main()' at arce.cpp:17: /usr/include/bits/stdio2.h:253: warning: call to '__fgets_chk_warn' declared with attribute warning: fgets called with bigger size than length of destination buffer