namespace work { namespace test { int get_age(); } } int work::test::get_age() { return 42; }
Standard input is empty
/usr/lib/gcc/i486-linux-gnu/4.8/../../../i386-linux-gnu/crt1.o: In function `_start': (.text+0x18): undefined reference to `main' collect2: error: ld returned 1 exit status
Standard output is empty