Help me in solving LPYAS151 problem

help
,
1

My issue

include <stdio.h>
include <math.h>

int main() {
int N;
N = 153;

if (result == N) {
    printf("Armstrong\n");
} else {
    printf("Not Armstrong\n");
}

return 0;

My code

#include <stdio.h>
#include <math.h>


int main() {
    int N;
    N = 153;

    if (result == N) {
        printf("Armstrong\n");
    } else {
        printf("Not Armstrong\n");
    }

    return 0;

Learning course: Algorithmic Problem Solving
Problem Link: https://www.codechef.com/learn/course/klu-problem-solving/KLUPS00A/problems/LPYAS151