ieGhEB - Online C Compiler & Debugging Tool

#include <stdio.h>
int main() {
    int n, i, first, second;
    printf("Enter size:\n ");
    scanf("%d", &n);
    int a[n];
    printf("Enter elements: \n");
    for(i=0;i<n;i++) scanf("%d",&a[i]);

    first=second=-1e9;
    for(i=0;i<n;i++){
        if(a[i]>first){ second=first; first=a[i]; }
        else if(a[i]>second && a[i]<first) second=a[i];
    }
    printf("Second largest = %d", second);
    return 0;
}