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;
}