fork download
copy 
  1. #include <iostream>
  2. #include <string>
  3.  
  4. int main()
  5. {
  6.     std::string Track2 = ";80221000000100018A1301000000000000000?";
  7.     std::string end_character = "?";
  8.  
  9.     std::cout << "Before: Track2 = \"" << Track2 << "\"\n";
  10.  
  11.     if (Track2.length() > 24)
  12.     {
  13.         auto question_mark_pos = Track2.find_first_not_of('0', 24);
  14.  
  15.         // If there is a character after the zeros AND
  16.         // if that character is last AND
  17.         // if that character is a question mark
  18.         if (question_mark_pos != std::string::npos &&
  19.             question_mark_pos == Track2.length() - 1 &&
  20.             Track2[question_mark_pos] == '?')
  21.         {
  22.             // Get the first 24 characters of the string
  23.             Track2 = Track2.substr(0, 24);
  24.  
  25.             // And append the special end character
  26.             Track2 += end_character;
  27.         }
  28.     }
  29.  
  30.     std::cout << "After: Track2 = \"" << Track2 << "\"\n";
  31.  
  32. }
  33.  
Success #stdin #stdout 0s 3060KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Before: Track2 = ";80221000000100018A1301000000000000000?"
After: Track2 = ";80221000000100018A13010?"
https://ideone.com/2SHFrE
language:
C++14 (gcc 8.3)
created:
11 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!