c-gcc, 49 bytes

Result

WA

Code [DL]

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

stdin

9037872181210622656093562964367663145164633056174127734248098032040657960136181499858249349718240982

stdout

stderr

/tmp/code.c:1:1: warning: data definition has no type or storage class
 s[1];main(){qsort(gets(s),100,1,strcmp);puts(s);}
 ^
/tmp/code.c:1:1: warning: type defaults to ‘int’ in declaration of ‘s’ [-Wimplicit-int]
/tmp/code.c:1:6: warning: return type defaults to ‘int’ [-Wimplicit-int]
 s[1];main(){qsort(gets(s),100,1,strcmp);puts(s);}
      ^
/tmp/code.c: In function ‘main’:
/tmp/code.c:1:13: warning: implicit declaration of function ‘qsort’ [-Wimplicit-function-declaration]
 s[1];main(){qsort(gets(s),100,1,strcmp);puts(s);}
             ^
/tmp/code.c:1:19: warning: implicit declaration of function ‘gets’ [-Wimplicit-function-declaration]
 s[1];main(){qsort(gets(s),100,1,strcmp);puts(s);}
                   ^
/tmp/code.c:1:33: error: ‘strcmp’ undeclared (first use in this function)
 s[1];main(){qsort(gets(s),100,1,strcmp);puts(s);}
                                 ^
/tmp/code.c:1:33: note: each undeclared identifier is reported only once for each function it appears in
/tmp/code.c:1:41: warning: implicit declaration of function ‘puts’ [-Wimplicit-function-declaration]
 s[1];main(){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