Thread: Using string as char array
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Re: Using string as char array

 
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  #6
Dec 2nd, 2008
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Originally Posted by JackDurden View Post
Well that sort of works but if the char I want to delete/erase is at the end of the string my compiler crashes. I dont understand how to delete/erase a char that is not an alphanumeric type.

C++ Syntax (Toggle Plain Text) 
  1.   int i=0;
  2.  string aWord = "abcdf!";
  3.  
  4. while(aWord[i])
  5. 	{
  6. 	if(isalpha(aWord[i]))printf ("character %c is alphabetic\n",aWord[i]);
  7. 	else
  8. 		aWord.erase (i, 1);
  9.     i++;
  10.   }
  11.   cout<<aWord;
Your program ran for me. I don't know what error you got, but if it is an index-out-of-range/segmentation fault error, you may want to change this:
C++ Syntax (Toggle Plain Text) 
  1. while (aWord[i])

to

C++ Syntax (Toggle Plain Text) 
  1. while (i < aWord.length ())

That might make a difference, might not. As to your other problem, only increment i if aWord[i] is a letter. erase and replace will cause the indexes to change, so some characters will be skipped if you use erase/replace AND increment i.
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