Help me in solving LPYAS151 problem

help
,
1

My issue

i have failed in hidden test case please verofy

My code

#include <stdio.h>

int main() {
	int n,temp,r,sum;
	scanf("%d",&n);
	n=temp;
	while(temp!=0)
	{
	    r=temp%10;
	    sum +=pow(r,3);
	    temp=temp/10;
	}
	
	if(sum==n)
	printf("Armstrong");
	else
	printf("Not Armstrong");
	return 0;

}

Learning course: Roadmap to 3*
Problem Link: https://www.codechef.com/learn/course/klu-roadmap-3star/KLURMP300B/problems/LPYAS151