How to Find Max and Min in Array C++ Program

How to find max and min in array C++ program.

In this article, you will learn how to find max and min in array C++ program.

Example

You should have knowledge of the following topics in c++ programming to understand these programs:

• C++ main() function
• C++ while loop
• C++ Data Type

Source Code

// How to Find Max and Min in Array C++ Program
#include <iostream>
#include <cmath>
using namespace std;

int main() {
    int s=0;
    cout << "Enter the size of the array::\n";
    cin >> s;
    
    int arr[s];
    cout << "\nEnter the " << s << " elements of the array::\n";
    int i=0;
    while (i<s) {
        cin >> arr[i];
        i++;
    }
    
    double min=INFINITY, max=-INFINITY;
    int l=s, min_sum=0, max_sum=0, counter=0;
    
    // It will get the lowest and highest value from the array
    while (l--) {
        if (arr[l] < min) {
            min=arr[l];
        }
        if (arr[l] > max) {
            max=arr[l];
        }
        if (arr[l]==arr[s-1]) {
            counter++;
        }
    }
    
    // It will calculate the minimum & maximum sum from the array
    if (counter == s) {
        l=s-1;
        while (l--) {
            min_sum += arr[l];
        }
        max_sum=min_sum;
    } else {
        l=s;
        while (l--) {
            if (arr[l]!=max) {
                min_sum += arr[l];
            }
            if (arr[l]!=min) {
                max_sum += arr[l];
            }
        }
    }
    
    // It will print the final output of the program
    cout << "MIN SUM:: " << min_sum << endl;
    cout << "MAX SUM:: " << max_sum << endl;
    return 0;
}

Run

Output

Explanation

In this given program, we have taken the input size of the array 6 and elements of the array 45 50 3 78 3 99 from the user. Then applied the standard calculation to find the minimum & maximum sum of the values from the given array.

Then It will return the minimum sum that is 179 and the maximum sum is 272.