ex3_22.cpp

///
/// Revise the loop that printed the first paragraph in text
/// to instead change the elements in text that correspond
/// to the first paragraph to all uppercase.
/// After you’ve updated text, print its contents.
///

#include <iostream>
#include <vector>
#include <string>
#include <iterator>

using std::vector;
using std::string;
using std::cout;
using std::cin;
using std::endl;

int main()
{
    vector<string> text;
    for (string line; getline(cin, line);) text.push_back(line);

    for (auto it = text.begin(); it != text.end() && !it->empty(); ++it) {
        for (auto& c : *it) c = toupper(c);
        cout << *it << endl;
    }

    return 0;
}