C++ Program to Find Largest Element of an Array

To understand this example, you should have the knowledge of the following C++ programming topics:

This program takes n number of element from user(where, n is specified by user) and stores data in an array. Then, this program displays the largest element of that array using loops.

Example: Display Largest Element of an array

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

int main() {

int i, n;
float arr[100];

cout << "Enter total number of elements(1 to 100): ";
cin >> n;
cout << endl;

// Store number entered by the user
for(i = 0; i < n; ++i) {
cout << "Enter Number " << i + 1 << " : ";
cin >> arr[i];
}

// Loop to store largest number to arr[0]
for(i = 1;i < n; ++i) {

// Change < to > if you want to find the smallest element
if(arr[0] < arr[i])
arr[0] = arr[i];
}

cout << endl << "Largest element = " << arr[0];

return 0;
}``````

Output

```Enter total number of elements(1 to 100): 8

Enter Number 1 : 23.4
Enter Number 2 : -34.5
Enter Number 3 : 50
Enter Number 4 : 33.5
Enter Number 5 : 55.5
Enter Number 6 : 43.7
Enter Number 7 : 5.7
Enter Number 8 : -66.5

Largest element = 55.5```

This program takes n number of elements from user and stores it in array arr[].

To find the largest element, the first two elements of array are checked and largest of these two element is placed in arr[0].

Then, the first and third elements are checked and largest of these two element is placed in arr[0].

This process continues until and first and last elements are checked.

After this process, the largest element of an array will be in arr[0] position.

• For example, for `arr[] = {4, 2, 9, 6, 23, 12}` and `arrSize = 6`, the return value should be 23.