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max() function for valarray in C++
In this article we will be discussing the working, syntax and examples of valarray::max() function in C++ STL.
What is a valarray?
std::valarray is a class which is used for representing, modifying the array of values, which supports elements-wise mathematical operations.
What is valarray::max()?
std::valarray::max() function is an inbuilt function in C++ STL, which is defined in <valarray> header file. This function returns the maximum value which is in the valarray container.
If the valarray is empty then the result which is returned is unspecified.
Syntax
V_array_name.max();
Parameters
The function accepts no parameter(s) −
Return value
This function returns the maximum value of the valarray.
Example
Input
valarray<int> arr = { 1, 2, 4, 5, 8, 9 };
arr.max();Output
9
Example
#include <bits/stdc++.h>
using namespace std;
int main(){
valarray<int> arr = {2, 4, 6, 8, 10};
cout<<"Largest element is = "; cout<<arr.max() << endl;
return 0;
}Output
Largest element is = 10
Example
#include <bits/stdc++.h>
using namespace std;
int main(){
valarray<int> arr = {2, 4, 6, 10, 10};
//finding out the square root of greatest number
int product = arr.max() * arr.max();
cout<<"Square root of greatest number is: "<<product;
return 0;
}Output
Square root of greatest number is: 100
Updated on: 17-Apr-2020
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