Array shifting (Using pointer)

#include<stdio.h>
int main()
{
    int i,arr[5], *ptr;
    ptr = arr;
    printf("Input 5 integer: ");
    for(i=0;i<5;i++)
    {
        scanf("%d", ptr+i);
    }
    int sKey = 10,sIndex;
    for(i=0;i<5;i++)
    {
        if(*ptr==sKey)
        {
            sIndex = i;
            break;
        }
        ptr++;
    }
    for(i = sIndex;i<5-1;i++)
    {
        *ptr = *(ptr+1);
        ptr++;
    }
    *ptr = 0;
    ptr-=4;
    printf("Remove 1st element & shift all the data at previous index: \n");
    for(i=0;i<5;i++)
    {
        printf("%d ",*ptr);
        ptr++;
    }
    printf("\n");
    return 0;
}