[mkong@munyoo] fingerprint [1:98] gcc -Wall -ansi -o finger fingerprint.c
Undefined                       first referenced
 symbol                             in file
main                                /local/solaris86/apps/gcc-3.4.5/bin/../lib/gcc/i386-pc-solaris2.9/3.4.5/crt1.o
ld: fatal: Symbol referencing errors. No output written to finger
collect2: ld returned 1 exit status