Linear Search in C language

#include <stdio.h>
int main()
{
int arr[]={2,4,6,8,9,2,1,56};
int i,n;
int flag =0;

// printf("Enter the value of searching in the array :");
scanf("%d",&n);

int arrlength = sizeof(arr) / sizeof(arr[0]);

for(i=0;i<arrlength;i++)
{
  if(arr[i]==n)
  {
    flag = 1;
    break;
  }
}

if(flag==1)
{
  printf("Element is found %d index value is %d :",i,n);
}

else
{
printf("Element is not present in an Array");

}
}