using an iterator.

[ptg]

i want to type in a word and for my program to output it backwards. but i have to use an iterator.
ex: "clue" and it should print it out "eulc"
this is what i have so far.

#include <iostream>
#include<string>
using namespace std;

int main(){
   
	string s;

	cout << "Enter a word: ";
	getline( cin, s );

	string::iterator r;
	r = s.begin();

	while ( r != s.end() ){
			cout<< *r;			
			r++;
	} 
	cout<<endl;

	return (0); 
}

[HJK]

Hi, not the prettiest implementation ever, but it works - for more than just a single word also. take a look at it and fiddle with it!

#include <iostream>
#include<string>
using namespace std;

// get a whole line, char by char from cin
int getPhrase(string &buffer)
{
	char buff;
	while(buff != '\n')
	{
		cin.get(buff);
		buffer += buff;
	}
	return buffer.length();
}


int main(){
    // origional
	string s;
	// reversed
	string reverse;	

	cout << "Enter a phrase: ";
	int len = getPhrase(s);
	
	for(int i=0;i<=len;i++)
	{
		// reverse the string
		reverse += s[len-i];
	}
	cout << reverse << endl;
	//(fanfare!)

	return 0; 
}

[Plasmator]

There are quite a few ways to do this, here's one:

std::copy(s.rbegin(), s.rend(), std::ostream_iterator<std::string::value_type> (std::cout));

[ptg]

There are quite a few ways to do this, here's one:

std::copy(s.rbegin(), s.rend(), std::ostream_iterator<std::string::value_type> (std::cout));

i dont quite understand what you meant by that im a beginner to c++
and HJK i need a way to make it print backward within the iterator.

[Plasmator]

i dont quite understand what you meant by that im a beginner to c++

Based on your original example, here's the for-loop equivalent:

for(std::string::const_reverse_iterator r = s.rbegin(), end = s.rend(); r != end; ++r)
{
    std::cout << *r;
}

Provided that you don't need to reverse the contents of the string itself.

[ptg]

oh is that im learning it in another way so your code seemed strange to me but i have seen it like that before. thanks for the help

okay i got it to work but it loops it too many times. i only want it to print once

never mind i figured it out