panda.cpp: In function 'bool complement(int, int)': panda.cpp:22: warning: comparison between signed and unsigned integer expressions panda.cpp:27: warning: comparison between signed and unsigned integer expressions panda.cpp:28: warning: comparison between signed and unsigned integer expressions panda.cpp:34: warning: comparison between signed and unsigned integer expressions panda.cpp: In function 'int main()': panda.cpp:54: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x panda.cpp:54: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x panda.cpp:72: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x panda.cpp:72: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x