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  1. #include<iostream>
  2. #include <fstream>
  3. using namespace std;
  4.  
  5. int main(){
  6.  
  7. ifstream fin("file_A.txt");
  8.  
  9. if(!fin){    cout << "讀檔失敗" << endl;   }    // 檢查讀檔成功與否
  10.  
  11. string s;
  12.  
  13. fin>> s ;
  14. // 或 getline(fin,s); 
  15.  
  16. fin.close();   // 關閉檔案
  17. return 0;
  18. }
Success #stdin #stdout 0s 3228KB
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stdin
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Standard input is empty
stdout
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讀檔失敗
https://ideone.com/DnWZ0L
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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