fork download 
  1. #include <stdio.h>
  2.  
  3. void dump(unsigned char *b)
  4. {
  5.   for(int i=0; i<8; ++i) printf(" %02x", *b++);
  6.   printf("\n");
  7. }
  8.  
  9. int main()
  10. {
  11.   union {
  12.     double d;
  13.     unsigned char b[8];
  14.   } u;
  15.   u.d = 0.0;
  16.   dump(u.b);
  17.   u.d = 1.0;
  18.   dump(u.b);
  19.   u.d = 0.1;
  20.   dump(u.b);
  21.   u.d = 0.5;
  22.   dump(u.b);
  23.  
  24.   return 0;
  25. }
Success #stdin #stdout 0s 5632KB
comments (?)
stdin 
Standard input is empty
stdout 
 00 00 00 00 00 00 00 00
 00 00 00 00 00 00 f0 3f
 9a 99 99 99 99 99 b9 3f
 00 00 00 00 00 00 e0 3f
https://ideone.com/WpwFWa
language:
C++ (gcc 8.3)
created:
4 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!