#include <stdio.h>
int main(){
    int arr[]={10,25,30,45,50};
    int i,key=30;
    int n=5;
    for(i=0;i<n;i++) {
        if(i=0;i<n;i++) {
            printf("Element found at index %d",i);
            return 0;
        }
    }
    printf("Element not found!");
    return 0;
}