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valarray max() and min() Functions in C++ with Examples

C++ valarray max() and min() Functions: Here, we will learn about the max() and min() functions, their usages, syntax and examples.
Submitted by Shivang Yadav, on May 07, 2022

The valarray class in C++ is a special container that is used for holding elements like an array and performing operations on them.

std::valarray::max() Function

The max() function is defined in valarray class. This function is used to find the largest / maximum value contained in the valarray.

Syntax:

T max() const;

// or
valarray_name.max()

Parameter(s): The method does not require any parameter.

Return Value: The method returns a single element of the same type as the valarray. It is the maximum element of the valarray.

C++ valarray max() Function Example:

#include <iostream>
#include <valarray>
using namespace std;

int main()
{
    // Declaring valarray
    valarray<int> myvalarr = { 1, 92, 13, 24, 55, 61, 7 };

    // Printing the elements of valarray
    cout << "The elements stored in valarray are : ";
    for (int& ele : myvalarr)
        cout << ele << " ";

    cout << "\nThe largest value in the valarray is ";
    cout << myvalarr.max();
    
    return 0;
}

Output:

The elements stored in valarray are : 1 92 13 24 55 61 7 
The largest value in the valarray is 92

std::valarray::min() Function

The min() function is defined in valarray class. This function is used to find the smallest / minimum value contained in the valarray.

Syntax:

T min() const;

// or
valarray_name.min()

Parameter(s): The method does not require any parameter.

Return Value: The method returns a single element of the same type as the valarray. It is the smallest element of the valarray.

C++ valarray min() Function Example:

#include <iostream>
#include <valarray>
using namespace std;

int main()
{
    // Declaring valarray
    valarray<int> myvalarr = { 1, 92, 13, 24, 55, 61, 7 };

    // Printing the elements of valarray
    cout << "The elements stored in valarray are : ";
    for (int& ele : myvalarr)
        cout << ele << " ";

    cout << "\nThe smallest value in the valarray is ";
    cout << myvalarr.min();
    
    return 0;
}

Output:

The elements stored in valarray are : 1 92 13 24 55 61 7 
The smallest value in the valarray is 1

Both the methods return the same type of value which is the same as the data type of valarray.

C++ valarray max() and min() Functions Example:

#include <iostream>
#include <valarray>
#include <typeinfo>
using namespace std;

int main()
{
    // Declaring valarray
    valarray<int> myvalarr = { 1, 92, 13, 24, 55, 61, 7 };

    // Printing the elements of valarray
    cout << "The elements stored in valarray are : ";
    for (int& ele : myvalarr)
        cout << ele << " ";

    cout << "\nThe type of smallest value in the valarray is ";
    cout << typeid(myvalarr.min()).name();

    cout << "\nThe type of largest value in the valarray is ";
    cout << typeid(myvalarr.max()).name();
    
    return 0;
}

Output:

The elements stored in valarray are : 1 92 13 24 55 61 7 
The type of smallest value in the valarray is i
The type of largest value in the valarray is i

i in the output represents an integer which is the data type of the value in valarray.

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