Second largest element in an array

Pre defined array:

#include <stdio.h>
int main()
{
    int a[10] = {1, 11, 3, 4, 150, 69, 7, 8, 9, 10};
    int i, l, s=0;
    l=a[0];
    for(i=0; i<10; i++) {
        if(l<a[i])
            l = a[i];
    }
    for(i=0; i<10; i++) {
        if(a[i]>a[i+1] && a[i]!=l)
            s = a[i];
    }
    printf("Largest - %d \nSecond - %d \n", l, s);
    return 0;
}

Taking array as an input:

#include <stdio.h>

int main()
{
    int n, i, l, s=0;
    printf("Enter the number of element(s):\n");
    scanf("%d", &n);
    int a[n];
    for(i=0;i<n;i++)
    {
        printf("\nEnter the element %d:\t", i);
        scanf("%d", &a[i]);
    }
    l=a[0];
    for(i=0; i<n; i++)
    {
        if(l < a[i])
        {
            s = l;
            l = a[i];
        }
        else if(s < a[i])
            s = a[i];
    }
    printf("\nLargest - %d \nSecond largest- %d \n", l, s);

    return 0;
}

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