fork download 
  1. #include <stdio.h>
  2. int main()
  3. {
  4.   unsigned char MAC_controller[8] = {0},*m=MAC_controller;
  5.   if( 6==scanf("%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx",m,m+1,m+2,m+3,m+4,m+5) )
  6.     puts("OK"),printf("%llx",*(unsigned long long*)m);
  7. }
Success #stdin #stdout 0s 1836KB
comments (?)
stdin 
aabbccddeeff
stdout 
OK
ffeeddccbbaa
https://ideone.com/Z4ZB1P
language:
C99 (gcc 8.3)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!