use c++ 2. Write a program that asks the user for three words and prints out the words in alphabetical order, then the words concatenated in alphabetical order (stored in a fourth string).

#include <iostream>
#include <string>

using namespace std;

int main() {
    string word1, word2, word3;
    string sorted_words, concat_words;

    // ask user for three words
    cout << "Enter three words: ";
    cin >> word1 >> word2 >> word3;

    // sort the words in alphabetical order
    if (word1 <= word2 && word1 <= word3) {
        sorted_words = word1;
        if (word2 <= word3) {
            sorted_words += " " + word2 + " " + word3;
        } else {
            sorted_words += " " + word3 + " " + word2;
        }
    } else if (word2 <= word1 && word2 <= word3) {
        sorted_words = word2;
        if (word1 <= word3) {
            sorted_words += " " + word1 + " " + word3;
        } else {
            sorted_words += " " + word3 + " " + word1;
        }
    } else {
        sorted_words = word3;
        if (word1 <= word2) {
            sorted_words += " " + word1 + " " + word2;
        } else {
            sorted_words += " " + word2 + " " + word1;
        }
    }

    // concatenate the words in alphabetical order
    if (word1 <= word2 && word1 <= word3) {
        concat_words = word1;
        if (word2 <= word3) {
            concat_words += word2 + word3;
        } else {
            concat_words += word3 + word2;
        }
    } else if (word2 <= word1 && word2 <= word3) {
        concat_words = word2;
        if (word1 <= word3) {
            concat_words += word1 + word3;
        } else {
            concat_words += word3 + word1;
        }
    } else {
        concat_words = word3;
        if (word1 <= word2) {
            concat_words += word1 + word2;
        } else {
            concat_words += word2 + word1;
        }
    }

    // output the sorted and concatenated words
    cout << "Sorted words: " << sorted_words << endl;
    cout << "Concatenated words: " << concat_words << endl;

    return 0;
}

Sample output:

Enter three words: apple dog cat
Sorted words: apple cat dog
Concatenated words: applecatdog