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  1. /// read() + ignore()
  2.  
  3. #include <iostream>         /// cin, cout
  4.  
  5. using namespace std;
  6.  
  7.  
  8. void read()
  9. {
  10.     char buf[80] {};
  11.  
  12.     cin.readsome(buf, 3);
  13.  
  14.     if (cin)
  15.     {
  16.         cout << "cin.readsome() successfully read "
  17.              << cin.gcount() << " characters: ";
  18.  
  19.         cout << buf << endl;
  20.  
  21.         cout << "next char: " << (char) cin.peek()
  22.              << endl;
  23.  
  24.         /// discard the character
  25.         cin.ignore();
  26.     }
  27.     else
  28.         cout << "cin.readsome() was unsuccessful" << endl;
  29. }
  30.  
  31.  
  32. int main()
  33. {
  34. 	std::ios_base::sync_with_stdio(false); // de-link C++ streams from their C counterparts
  35.  
  36. 	for (int i = 0; i < 3; i++)
  37.        read();
  38. }
Success #stdin #stdout 0s 16064KB
comments (?)
stdin
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1234567890
stdout
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cin.readsome() successfully read 3 characters: 123
next char: 4
cin.readsome() successfully read 3 characters: 567
next char: 8
cin.readsome() successfully read 3 characters: 90

next char: �
https://ideone.com/AMXKgK
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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