Write a program that reads words from a text file and displays all the nonduplicate words in ascending order.
What will be an ideal response?
```
#include
#include
#include
#include
using namespace std;
int main()
{
string filename;
cout << "Enter a file name: ";
cin >> filename;
ifstream input(filename);
set
string word;
while (input >> word)
{
s.insert(word);
}
for (auto p = s.begin(); p != s.end(); p++)
{
cout << *p << " ";
}
// Alternatively, you can a foreach loop in C++11
for (string s: set)
cout << s << " ";
return 0;
}
```
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