#include <iostream>
#include <valarray>
#include <cmath>
using namespace std;
int main()
{
valarray<int> v(10);
for(int i=0; i<10; i++)
v[i] = i;
cout << "Original contents: ";
for(int i=0; i<10; i++)
cout << v[i] << " ";
valarray<bool> vb = v < 5;
cout << "Those elements less than 5: ";
for(int i=0; i<10; i++)
cout << vb[i] << " ";
cout << endl;
}
/*
Original contents: 0 1 2 3 4 5 6 7 8 9 Those elements less than 5: 1 1 1 1 1 0 0 0 0 0
*/
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