[RESOLVED] string question

hi all,

suppose i've a string that has abc like:

Code:

---

string str;
cin>>str;        // user enters abc
for(int i=0; i<str.length(); i++)
{
          //compare if str has 'a'
        // loop continues till find all character by character
}

---

is it possible with string class to find character by character?


thanks..

Yes. Take a look at the interface of std::string.

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

Quote:

---

Originally Posted by Aashi

hi all,

suppose i've a string that has abc like:

Code:

---

string str;
cin>>str;        // user enters abc
for(int i=0; i<str.length(); i++)
{
          //compare if str has 'a'
        // loop continues till find all character by character
}

---

is it possible with string class to find character by character?


thanks..

---

As an aside to the question and responses already given, if you intend "cin >> str;" to put the whole line into str, then you might want to consider using

Code:

---

std::getline(std::cin, str);

---

since

Code:

---

cin >> str;

---

will not put the whole line into str (it will only copy the first block of characters until it hits some white space) whereas std::getline will put the whole line into str.

thanks all, :)
can anyone tell me which member function should i use for this purpose? from this site http://www.cplusplus.com/reference/string/string/
i tried with find, compare..

Quote:

---

Originally Posted by Aashi

thanks all, :)
can anyone tell me which member function should i use for this purpose?

---

Your description of what you want to do is not clear.

Let's start with this:

Code:

---

"abcabcabcda"

---

So what do you want to do with this string?

Regards,

Paul McKenzie

Quote:

---

Originally Posted by Paul McKenzie

Your description of what you want to do is not clear.

Let's start with this:

Code:

---

"abcabcabcda"

---

So what do you want to do with this string?

Regards,

Paul McKenzie

---

i want to make a logic for converting infix expression to postfix expression: for this i need to have stack and string. I can use char array for this, i just want to try with string. So, how can i compare a character with a string having abc/e+ ??

thanks...

Quote:

---

Originally Posted by Aashi

thanks all, :)
can anyone tell me which member function should i use for this purpose? from this site http://www.cplusplus.com/reference/string/string/
i tried with find, compare..

---

In the link: Look what they wrote after "Element access:"

Regards
PA

got it... thanks..