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 <bits/stdc++.h> using namespace std;
int main()
{ // Initializing valarray
valarray< double >
varr = { 4, 16, 25, 36, 49 };
// Declaring new valarray
valarray< double > 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 <bits/stdc++.h> using namespace std;
int main()
{ // Initializing valarray
valarray< double >
varr = { 5, 16, 26, 37, 1 };
// Declaring new valarray
valarray< double > 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