Average of the elements of the array

/* C program to find the average of the elements of the array */
    #include<stdio.h>
    #include<conio.h>
    void main()
    {
         int ar[100],n,i,sum=0;
         float avg;
          
         printf("Enter the size of the array \n");
         scanf("%d",&n);
          
         printf("Enter the elements of the array to find their average \n");
         for(i=0;i<n;i++)
        {
               scanf("%d",&ar[i]);
               sum=sum+ar[i];
         }
          
         avg=(float)sum/n;
     printf(" Average is %f",avg);
         getch();
}