sl.cpp: In function 'int main()': sl.cpp:21: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x sl.cpp:21: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x sl.cpp:24: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x sl.cpp:24: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x