R6010 abort() has been called

问题:

I read about substr from here

http://www.cplusplus.com/reference/string/string/substr/

Here is my code :

 int main() { std::ifstream in ("c:\\users\\admin\\desktop\\aaa.txt"); std::ofstream out ("c:\\users\\admin\\desktop\\bbb.txt"); std::string s ; while ( getline (in,s) ) {      std::size_t startpos = s.find("test");      std::string str = s.substr (startpos);      out << str << endl;  }   in.close();  out.close(); } 

I get error : R6010 abort() has been called

Note : aaa.txt contains spaces/characters/html tags

Any idea ?

回答1:

Since I dont know the content of the text file, could you try making the following changes and let me know if the error is still being shown:

#include <fstream> #include <iostream> #include <sstream>  using namespace std;  int main() {     ifstream in("example.txt");     ofstream out("bbb.txt");     string s = std::string();     string str = std::string();     while (getline(in, s))     {         size_t startpos = s.find("test");         cout << s;          if (startpos != std::string::npos){             str = s.substr(startpos);             out << str << endl;         }     }     in.close();     out.close();     getchar();      return 0; } 

I am using if (startpos != std::string::npos) condition to check what to do when the find succeeds, this is missing in your code. adding this case will resolve your error.

Keep coding :)

回答2:

While Code Frenzy answer is right, you can also use exceptions to help catch these kind of errors:

#include <fstream> #include <iostream> #include <sstream>  using namespace std;  int main() {     std::ifstream in ("aaa.txt");     std::ofstream out ("bbb.txt");     std::string s ;      try     {         while ( getline (in,s) )         {              std::size_t startpos = s.find("test");              std::string str = s.substr (startpos);              out << str << endl;          }         in.close();         out.close();     }     catch(std::exception e)     {         // (1) it will catch the error show show         cerr << e.what() << endl;     }     catch(std::out_of_range e)     {         // (2) this will also catch the same error if (1) was not there but could         // get you more details if you wanted since its more specific but i have         // not digged into it further         cerr << e.what() << endl;     }     catch(...)     {         // (3) just for sanity check if first two didn't catch it         cerr << "something went wrong";     } } 

The exceptoin catches this error and prints the message:

invalid string position

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