Armstrong Numbers in given interval

#include <stdio.h>

int main()
{
    int start,end,i,tmp,d,sumOfCubes=0,num;
    printf("Enter the  interval : ");
    scanf("%d ",&start);
    scanf("%d",&end);
    for(num = start;num<=end;num++)
    {
        sumOfCubes=0;
        tmp = num;
        while(tmp!=0)
        {
            d = tmp%10;
            sumOfCubes = sumOfCubes + (d*d*d);
            tmp = tmp/10;
        }
        if(num == sumOfCubes)
            printf("%d is a Armstrong Number\n",num);
        else
            printf("%d is not a Armstrong Number\n",num);
        
    
    }
    return 0;
}