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  1. static bool process(std::string& macro)
  2. {
  3.     if (macro == "error")
  4.     {
  5.         return false; // fail the parse
  6.     }
  7.  
  8.     if (macro == "hello")
  9.     {
  10.         macro = "bye";
  11.     }
  12.     else if (macro == "bye")
  13.     {
  14.         macro = "We meet again";
  15.     }
  16.     else if (macro == "sideeffect")
  17.     {
  18.         std::cerr << "this is a side effect while parsing\n";
  19.         macro = "(done)";
  20.     }
  21.     else if (std::string::npos != macro.find('~'))
  22.     {
  23.         std::reverse(macro.begin(), macro.end());
  24.         macro.erase(std::remove(macro.begin(), macro.end(), '~'));
  25.     }
  26.     else
  27.     {
  28.         macro = std::string("<<") + macro + ">>"; // this makes the unsupported macros appear unchanged
  29.     }
  30.  
  31.     return true;
  32. }
  33.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:1: error: ‘string’ is not a member of ‘std’
prog.cpp:1: error: ‘macro’ was not declared in this scope
prog.cpp:2: error: expected ‘,’ or ‘;’ before ‘{’ token
prog.cpp:1: warning: ‘process’ defined but not used
stdout
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Standard output is empty
https://ideone.com/aKLt9
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
secret

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