c-gcc, 54 bytes

Result

WA

Code [DL]

main(*s){strcmp(qsort(gets(s),100,1,strcmp));puts(s);}

stdin

2978284269070884269021150211550339240820220038548710285095722930231784024332151285939672417969213269

stdout

stderr

/tmp/code.c:1:6: error: expected declaration specifiers or ‘...’ before ‘*’ token
 main(*s){strcmp(qsort(gets(s),100,1,strcmp));puts(s);}
      ^
/home/esolang/bin/c-gcc: line 6: /tmp/code: No such file or directory
rm: cannot remove '/tmp/code': No such file or directory

strace