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// Demonstrating set construction and insertion.

#include <list.h>

#include <set.h>

#include <assert.h>

list<char> lst(char* s)

// Return list containing the characters of s

// (not including the terminating null).

{

list<char> x;

while (*s != '\0')

x.push_back(*s++);

return x;

}

int main()

{

cout << "Demonstrating set construction and insertion."

<< endl;

list<char> list1 = lst("There is no distinctly native "

"American criminal class");

// Put the characters in list1 into set1:

set<char, less<char> > set1;

list<char>::iterator i;

for (i = list1.begin(); i != list1.end(); ++i)

set1.insert(*i);

// Put the characters in set1 into list2:

list<char> list2;

set<char, less<char> >::iterator k;

for (k = set1.begin(); k != set1.end(); ++k)

list2.push_back(*k);

assert(list2 == lst(" ATacdehilmnorstvy"));

}