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  1. #include <iostream>
  2. #include <string>
  3.  
  4. std::string radix (int value, unsigned r) {
  5.   std::string buffer;
  6.   std::string sign;
  7.   if (value < 0) {
  8.      sign = "-";
  9.      value = -value;
  10.   }
  11.   do {
  12.     int digit = value % r;
  13.     buffer += digit<10 ? '0'+digit : 'A'+(digit-10);
  14.     value /= r;
  15.   } while (value !=0);
  16.  
  17.   buffer += sign;
  18.   return std::string(buffer.rbegin(), buffer.rend());
  19. }
  20.  
  21. int main()
  22. {
  23.     std::cout << radix(5,2)   << std::endl
  24.               << radix(5,10)  << std::endl
  25.               << radix(-5,10) << std::endl
  26.               << radix(15,2)  << std::endl
  27.               << radix(15,7)  << std::endl
  28.               << radix(15,8)  << std::endl
  29.               << radix(15,10) << std::endl
  30.               << radix(15,14) << std::endl
  31.               << radix(15,15) << std::endl
  32.               << radix(15,16);
  33. }
Success #stdin #stdout 0s 3476KB
comments (?)
stdin 
Standard input is empty
stdout 
101
5
-5
1111
21
17
15
11
10
F
https://ideone.com/INRu27
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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