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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6.     char ch, next;
  7.  
  8.     cout << "Enter C program (Ctrl+D to finish):\n";
  9.  
  10.     while (cin.get(ch))
  11.     {
  12.         if (ch == '/')
  13.         {
  14.             if (cin.get(next))
  15.             {
  16.                 // Single-line comment
  17.                 if (next == '/')
  18.                 {
  19.                     while (cin.get(ch) && ch != '\n')
  20.                         ;
  21.  
  22.                     if (ch == '\n')
  23.                         cout << '\n';
  24.                 }
  25.  
  26.                 // Multi-line comment
  27.                 else if (next == '*')
  28.                 {
  29.                     while (cin.get(ch))
  30.                     {
  31.                         if (ch == '*')
  32.                         {
  33.                             if (cin.get(next) && next == '/')
  34.                                 break;
  35.                         }
  36.                     }
  37.                 }
  38.  
  39.                 // Normal division operator
  40.                 else
  41.                 {
  42.                     cout << '/';
  43.                     cout << next;
  44.                 }
  45.             }
  46.         }
  47.         else
  48.         {
  49.             cout << ch;
  50.         }
  51.     }
  52.  
  53.     return 0;
  54. }
Success #stdin #stdout 0s 5308KB
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stdin
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Standard input is empty
stdout
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Enter C program (Ctrl+D to finish):
https://ideone.com/nnFfC3
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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