Get square root of elements in a valarray : valarray « valarray « C++ Tutorial

1. C++ Tutorial
2. valarray
3. valarray

#include <iostream>
#include <valarray>
#include <cmath>
using namespace std;
   
int main()
{
  valarray<int> v(10);
  int i;
   
  for(i=0; i<10; i++) v[i] = i;
   
  cout << "Original contents: ";
  for(i=0; i<10; i++)
    cout << v[i] << " ";
  cout << endl;
   
  v = v.cshift(3);
   
  cout << "Shifted contents: ";
  for(i=0; i<10; i++)
    cout << v[i] << " ";
  cout << endl;
   
  valarray<double> fv(5);
  for(i=0; i<5; i++) fv[i] = (double) i;
   
  cout << "Original contents: ";
  for(i=0; i<5; i++)
    cout << fv[i] << " ";
  cout << endl;
   
  fv = sqrt(fv);
   
  cout << "Square roots: ";
  for(i=0; i<5; i++)
    cout << fv[i] << " ";
  cout << endl;
   
   
  return 0;
}