valarray « Valarray « C++

1.Create valarray of bool value by using comparison operator on another valarray
2.Minus 10 from each element in a valarray
3.Use valarray + valarray to double the value for each element in valarray
4.Do sqrt for all elements in a valarray
5.Print three-dimensional valarray line-by-line
6.Print valarray as two-dimensional array
7.valarray with double value inside