Do sqrt for all elements in a valarray : valarray « valarray « C++ Tutorial





#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*i;

  cout << "Original contents: ";
  for(int i=0; i<10; i++)
    cout << v[i] << " \n\n";

  v = sqrt(v);

  for(int i=0; i<10; i++)
    cout << v[i] << " \n\n";


  cout << endl;
}
Original contents: 0

1

4

9

16

25

36

49

64

81

0

1

2

3

4

5

6

7

8

9










20.1.valarray
20.1.1.Create valarray of bool value by using comparison operator on another valarray
20.1.2.subtracting 10 from each element
20.1.3.Minus 10 from each element in a valarray
20.1.4.Plus two valarrays together
20.1.5.Get square root of elements in a valarray
20.1.6.Use valarray + valarray to double the value for each element in valarray
20.1.7.Do sqrt for all elements in a valarray
20.1.8.Print three-dimensional valarray line-by-line
20.1.9.Print valarray as two-dimensional array
20.1.10.valarray with double value inside