Question & Solution #1

Question:

Take input from the user in an array and print the second maximum value from the entered input.

Source:

The Knowledge Network Club

#include <stdio.h>

int main() {
    // Declare variables
    int i, elements;

    // Input the number of elements in the array
    printf("Enter the number of elements in the array: ");
    scanf("%d", &elements);

    // Declare an array to store the elements
    int input[elements];

    // Input unique elements of the array
    printf("Enter the unique elements of the array: ");
    for (i = 0; i < elements; i++) {
        scanf("%d", &input[i]);
    }

    // Find the maximum element and its index
    int max1 = input[0], index1 = 0;
    for (i = 1; i < elements; i++) {
        if (input[i] > max1) {
            max1 = input[i];
            index1 = i;
        }
    }

    printf("\nMax element is: %d at index %d", max1, index1);

    // Initialize second maximum element and its index
    int max2 = 0, index2 = 0;

    // Check max2 with the first non-maximum element's value
    for (i = 0; i < elements; i++) {
        if (i == index1) {
            continue;  // Skip the index of the maximum element
        }
        max2 = input[i];
        break;
    }

    // Find second maximum element and its index
    for (i = 0; i < elements; i++) {
        // Search for the second maximum element with the specified condition
        if (input[i] > max2 && input[i] != max1) {
            max2 = input[i];
            index2 = i;  // Update the index of the second maximum element
        }
    }

    printf("\n2nd Max element is: %d at index %d\n", max2, index2);

    return 0;
}