valarray abs() function in C++
The abs() function is defined in valarray header file. This function is used to calculate the absolute value of each element in the valarray and returns a valarray containing the absolute values of all the elements.
Syntax:
abs(varr);
Parameter: This function takes a mandatory parameter varr which represents valarray.
Returns: This function returns a valarray containing the absolute values of all the elements.
Below programs illustrate the above function:
Example 1:-
// C++ program to demonstrate // example of abs() function. #include <bits/stdc++.h> using namespace std; int main() { // Initializing valarray valarray<int> varr = { 20, 12, -20, 0, -30 }; // Declaring new valarray valarray<int> varr1; // use of abs() function // for finding abs value varr1 = abs(varr); // Displaying new elements value cout << "The new valarray with" << " manipulated values is : "; for (int& x : varr1) { cout << x << " "; } cout << endl; return 0; } |
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Output:
The new valarray with manipulated values is : 20 12 20 0 30
Example 2:-
// c++ program to demonstrate // example of abs() function. #include <bits/stdc++.h> using namespace std; int main() { // Initializing valarray valarray<int> varr = { -36, -369, -20, 0, -30 }; // Declaring new valarray valarray<int> varr1; // use of abs() function // for finding abs value varr1 = abs(varr); // Displaying new elements value cout << "The new valarray" << " with manipulated values is : "; for (int& x : varr1) { cout << x << " "; } cout << endl; return 0; } |
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Output:
The new valarray with manipulated values is : 36 369 20 0 30
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