fork download
copy 
  1. #include <iostream>
  2. #include <iomanip>
  3.  
  4. using namespace std;
  5.  
  6. constexpr const char * convert(char hx)
  7. {
  8.     constexpr const char * hex[16] = {
  9.         "0000","0001","0010","0011",
  10.         "0100","0101","0110","0111",
  11.         "1000","1001","1010","1011",
  12.         "1100","1101","1110","1111" };
  13.     if (hx >= '0' && hx <= '9') return hex[hx-'0'];
  14.     else if (hx >= 'A' && hx <= 'F') return hex[hx-'A'+10];
  15.     else if (hx >= 'a' && hx <= 'f') return hex[hx-'a'+10];
  16.     return nullptr;
  17. }
  18.  
  19.  
  20.  
  21. int main(int argc, const char * argv[])
  22. {
  23.     constexpr auto x = convert('F'); // x = "1111"
  24.     cout << x << endl;
  25.     char y = '1';
  26.     const auto z = convert(y);
  27.     cout << z << endl;
  28. }
  29.  
Success #stdin #stdout 0s 4376KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1111
0001
https://ideone.com/lKWNQx
language:
C++14 (gcc 8.3)
created:
3 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!