Find Nth Largest Number in an Array (C Program)

✅ C Program to Find the Nth Largest Number in an Array

#include <stdio.h>

// Function to sort array in descending order
void sortDescending(int arr[], int size) {
    for(int i = 0; i < size-1; i++) {
        for(int j = i+1; j < size; j++) {
            if(arr[i] < arr[j]) {
                // Swap
                int temp = arr[i];
                arr[i] = arr[j];
                arr[j] = temp;
            }
        }
    }
}

int main() {
    int arr[100], n, size;

    printf("Enter the size of array: ");
    scanf("%d", &size);

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

    printf("Enter the value of n (e.g., 1st, 2nd largest): ");
    scanf("%d", &n);

    if(n <= 0 || n > size) {
        printf("Invalid value of n!\n");
        return 1;
    }

    // Sort the array in descending order
    sortDescending(arr, size);

    printf("The %dth largest number is: %d\n", n, arr[n - 1]);

    return 0;
}
  

📘 Explanation:

This program accepts an array of integers from the user and then finds the nth largest number. It sorts the array in descending order using a simple selection sort logic, then returns the (n - 1)^th index element as the nth largest.

• sortDescending() is a helper function that arranges the elements in descending order.
• User inputs the size of the array, the array elements, and the value of n.
• Program validates n to ensure it's within the range.
• It returns the required element after sorting.

🧾 Sample Output:

Enter the size of array: 5
Enter 5 elements:
10 50 30 20 40
Enter the value of n (e.g., 1st, 2nd largest): 3
The 3th largest number is: 30
  

🔑 Keywords:

nth largest number, sort array in C, array logic, sorting algorithms, find max values, C interview programs, AdSense code snippets

📌 Hashtags:

#CProgramming #ArraySorting #NthLargest #InterviewQuestion #BeginnerFriendly #AdSenseCCode #CodeWithLogic

🔍 Search Description:

This C program finds the nth largest number from a given array using sorting. It sorts the array in descending order and returns the required position element. Easy to understand and ideal for learning array manipulation logic.