How do I read input by line and then separate by word?

Question

I am trying to take in a phrase from the user and reverse the order of the words and print this back out. For example "hello world" becomes "world hello".

I have found other questions similar to mine on here and most of the "up-voted" answers suggest doing it this way:

std::list<std::string> input;
std::list<std::string>::iterator iter;
std::string phrase;
std::string word;

std::cout << " Enter the phrase you wish to reverse " << std::endl;
std::cout << " >> ";

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

std::istringstream iss(phrase);

while (iss >> word) {
    input.push_front(word);
}

for (iter = input.begin(); iter != input.end(); ++iter) {
    std::cout << *iter << " ";
}

However, this does not work for me. When I run the code, it never stops to allow for input. I can not figure out why it does not stop to allow me to type input.

How can I do this so that I can type in a phrase and have the program read it in word by word?

Edit: I am using MS Visual Studio 2015 and compiling using the debug (f5) option.

Works for me [here](http://ideone.com/8FI97p). How are you running it? — R_Kapp, Dec 29 '15 at 20:33
What operating system are you using? How are you compiling the code? How are you running it? — AndyG, Dec 29 '15 at 20:33
Im running it in visual studio 2015. I just hit the debug button and the window pops up. It never stops to allow me to type in a phrase. — zkirkland, Dec 29 '15 at 20:35
i think there is '\n' in the input buffer try to flush the input buffer before getting the input ... — Ankur Jyoti Phukan, Dec 29 '15 at 20:40

score 1 · Accepted Answer · answered Dec 29 '15 at 20:45

1

It turns out there was a stray "\n" in the input stream and I simply called

std::cin.get();

to get rid of it.

I thought that might be the case but I could not think of how to "flush" the input stream since there is no flush method for cin.

Thank you very much Ankur Jyoti Phukan for your help!

answered Dec 29 '15 at 20:45

zkirkland

12,175
3
16
18

There is a way to flush `std::cin` but it's not obvious. There are several duplicates but [this answer is short and to the point](http://stackoverflow.com/a/32895848/445976). – Blastfurnace Dec 29 '15 at 23:19

How do I read input by line and then separate by word?

1 Answers1