gheizere.cpp: In function 'int main()': gheizere.cpp:31: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x gheizere.cpp:31: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x gheizere.cpp: In function 'int ok(int, int)': gheizere.cpp:19: warning: control reaches end of non-void function