valarray sqrt() function in C++

• Last Updated : 24 Oct, 2018

The sqrt() function is defined in valarray header file. This function is used to calculate square root of the value of each element in valarray.

Syntax:

sqrt(varr);

Parameter: This function takes a mandatory parameter varr which represents valarray.

Returns: This function returns a valarray containing the square root of all the elements of valarray.

Below programs illustrate the above function:

Example 1:-

 // C++ program to demonstrate// example of sqrt() function.  #include using namespace std;int main(){    // Initializing valarray    valarray        varr = { 4, 16, 25, 36, 49 };      // Declaring new valarray    valarray varr1;      // use of sqrt() function    varr1 = sqrt(varr);      // Displaying new elements value    cout << "The new valarray with"         << " manipulated values is : "         << endl;      for (double& x : varr1) {        cout << x << " ";    }      cout << endl;      return 0;}
Output:
The new valarray with manipulated values is :
2 4 5 6 7

Example 2:-

 // C++ program to demonstrate// example of sqrt() function.  #include using namespace std;int main(){    // Initializing valarray    valarray        varr = { 5, 16, 26, 37, 1 };      // Declaring new valarray    valarray varr1;      // use of sqrt() function    varr1 = sqrt(varr);      // Displaying new elements value    cout << "The new valarray with"         << " manipulated values is : "         << endl;      for (double& x : varr1) {        cout << x << " ";    }      cout << endl;      return 0;}
Output:
The new valarray with manipulated values is :
2.23607 4 5.09902 6.08276 1
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