~ 71> cc string_esskar.c 
Undefined                       first referenced
 symbol                             in file
max                                 /var/tmp//cciiaHBa.o
main                                /usr/local/lib/gcc-lib/sparc-sun-solaris2.8/3.1/crt1.o
ld: fatal: Symbol referencing errors. No output written to a.out
collect2: ld returned 1 exit status