C program to find the largest element in an array using bubble sort

🔹 Find Largest Element in Array (C Program)

#include <stdio.h>

void largestElement(int a[], int num)
{
    // Bubble sort in ascending order
    for(int i = 0; i < num - 1; i++)
    {
        for(int j = 0; j < num - i - 1; j++)
        {
            if(a[j] > a[j + 1])
            {
                int temp = a[j];
                a[j] = a[j + 1];
                a[j + 1] = temp;
            }
        }
    }

    // After sorting, the largest element is at index num - 1
    printf("Largest element in the array: %d\n", a[num - 1]);
}

int main()
{
    int num;
    printf("Enter the size of the array:\n");
    scanf("%d", &num);

    if(num < 1)
    {
        printf("Invalid! Need at least 1 number to find the largest element.\n");
        return 1;
    }

    int a[num];
    printf("Enter %d elements:\n", num);
    for(int i = 0; i < num; i++)
    {
        scanf("%d", &a[i]);
    }

    largestElement(a, num);
    return 0;
}
  

📘 Explanation:

• Reads the array size and elements from the user.
• Sorts the array using Bubble Sort in ascending order.
• The largest element will be at the last index (num - 1) after sorting.
• If size is less than 1, it gives an error message.

🧪 Sample Output:

Enter the size of the array:
5
Enter 5 elements:
10 45 3 89 27
Largest element in the array: 89
    

🏷️ Keywords:

largest number in array, C program for max element, bubble sort, array processing in C, beginner C logic, find max in array