Reversing order of words in a sentence

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You can use std::string std::vector and std::reverse to make things easier:

std::string sentence = "Your sentence which contains ten words, two of them numbers";
std::stringstream stream(sentence);
std::vector<std::string> words;
for ( std::string word; stream >> word; )
{
    words.push_back(word);
}

Now you have everything separated into words. You may now want to remove question marks or other punctuation, since the logic will be easier to implement while the words are still in the correct order. For reversing, do this:

std::reverse(words.begin(), word.end());

You’ll need to include several headers:

#include <string> // for storing strings in a C++ way
#include <sstream> // to easily separate sentences into words
#include <vector> // to dynamically store arbitrary amounts of words
#include <algorithm> // for std::reverse

You can see this code in action with this demo on ideone.com

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