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  1. #include <iostream>
  2. #include <string>
  3. #include <cstdio>
  4.  
  5. int main()
  6. {
  7.     std::string input[] = { "1.0.7", "1.0.", "1.0", "1.", "1" };
  8.  
  9.     for (size_t i = 0; i < sizeof(input)/sizeof(input[0]); i++)
  10.     {
  11.         std::cout << input[i] << ": ";
  12.  
  13.         // Init to zero.
  14.         int parts[3] = { 0 };
  15.  
  16.         if (std::sscanf(input[i].c_str(),
  17.                         "%d.%d.%d",
  18.                         &parts[0],
  19.                         &parts[1],
  20.                         &parts[2]) >= 2)
  21.         {
  22.             // OK, the string contained at least two parts.
  23.  
  24.             std::cout << parts[0]
  25.                       << ","
  26.                       << parts[1]
  27.                       << ","
  28.                       << parts[2]
  29.                       << "\n";
  30.         }
  31.         else
  32.         {
  33.             std::cout << "bad format\n";
  34.         }
  35.     }
  36.     return 0;
  37. }
  38.  
Success #stdin #stdout 0.01s 2812KB
comments (?)
stdin 
Standard input is empty
stdout 
1.0.7: 1,0,7
1.0.: 1,0,0
1.0: 1,0,0
1.: bad format
1: bad format
https://ideone.com/0Ox9b
language:
C++ (gcc 8.3)
created:
13 years ago
visibility:
public

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