Thread: must be a modifiable lvalue error

This is supposed to remove vowels from a word. However the .at doesnt work, it says the 'a' has to be a modifiable lvalue... what does that mean?

Code:

#include <string>
#include <iostream>
using namespace std;
  
void vowelremover(string&);
string word;
int main ()
{ 
 
    cout << "Enter a word of which you want the vowels removed: ";
    cin >> word;
 
	vowelremover(word);
 
	cout << "The word without vowels is: " << word << endl;
	return 0;


 }
 
 


void vowelremover (string& enteredword)
{
	int posvowel;
	int i;


 for (i == 0; i < enteredword.length(); i ++)
	 {
	 while (enteredword.at(i) = 'a' || enteredword.at(i) = 'e' || enteredword.at(i) = 'i' || enteredword.at(i) = 'o' || 
		 enteredword.at(i) = 'u' || enteredword.at(i) = 'A' || enteredword.at(i) = 'E' || enteredword.at(i) = 'I' || enteredword.at(i) = 'O' || 
		 enteredword.at(i) = 'U')
	
		{
			 enteredword.erase(i, 1);
			i == 0;
		 }
	 
	 }
}

It means you're mixing up assignment operators (=) with equality operators (==) in multiple places.

double equal signs doesnt work though...

"Doesn't work" is a vague and useless description of your problem. For the best assistance, post the updated code along with all warning/error messages you've received.

Oh wow I'm stupid. The double equal signs seems to work, but when i run the program it says i'm using i without initializing it.

That's probably because you're also mixing up with equality operators (==) with assignment operators (=).

Post that version of the code, please.

Code:

#include <string>
#include <iostream>
using namespace std;
   
void vowelremover(string&);
string word;
int main ()
{ 
  
    cout << "Enter a word of which you want the vowels removed: ";
    cin >> word;
  
    vowelremover(word);
  
    cout << "The word without vowels is: " << word << endl;
    return 0;
 
 }
  
  
 
void vowelremover (string& enteredword)
{
    int posvowel;
    int i;
 
 
 for (i = 0; i < enteredword.length(); i ++)
     {
     while (enteredword.at(i) == 'a' || enteredword.at(i) == 'e' || enteredword.at(i) == 'i' || enteredword.at(i) == 'o' || 
         enteredword.at(i) == 'u' || enteredword.at(i) == 'A' || enteredword.at(i) == 'E' || enteredword.at(i) == 'I' || enteredword.at(i) == 'O' || 
         enteredword.at(i) == 'U')
     
        {
             enteredword.erase(i, 1);
            i == 0;
         }
      
     }
}

What is line 36 supposed to be doing?

If it does find a vowel it resets i to 0 so it starts the search over because the position of the letters will be messed up.

See post #7.

wow guys... I realize how stupid I am. So when i want something to literally equal 0 i do one and when i want it to emulate something its two equal signs? btw the code works perfectly, thanks so much for the help.