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  1. #include <iostream>
  2. #include <sstream>
  3. #include <string>
  4.  
  5. using namespace std;
  6.  
  7. int main() {
  8.     string str, temp;
  9.     double d = 0;
  10.     // while (cout << "輸入> " && getline(cin, str)) {
  11.     //     stringstream ss(str);
  12.     //     cout << "輸出> ";
  13.     //     while (ss >> d) {
  14.     //         if (ss.fail()) {
  15.     //             cout << "FAIL";
  16.     //             ss.clear();
  17.     //             ss >> temp;
  18.     //             continue;
  19.     //         }
  20.     //         cout << d << endl;
  21.     //     }
  22.     // }
  23.     istringstream iss("2.832 1.3067 nana 1.678");
  24.     double num = 0;
  25.     while (iss >> num || !iss.eof()) {
  26.         if (iss.fail()) {
  27.             iss.clear();
  28.             string dummy;
  29.             iss >> dummy;
  30.             continue;
  31.         }
  32.         cout << num << endl;
  33.     }
  34.     return 0;
  35. }
Success #stdin #stdout 0s 4396KB
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stdin
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Standard input is empty
stdout
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2.832
1.3067
1.678
https://ideone.com/u301fM
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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