c program to check the number is armstrong or not

1#include <stdio.h>
2int main() {
3    int num, originalNum, remainder, result = 0;
4    printf("Enter a three-digit integer: ");
5    scanf("%d", &num);
6    originalNum = num;
7
8    while (originalNum != 0) {
9       // remainder contains the last digit
10        remainder = originalNum % 10;
11        
12       result += remainder * remainder * remainder;
13        
14       // removing last digit from the orignal number
15       originalNum /= 10;
16    }
17
18    if (result == num)
19        printf("%d is an Armstrong number.", num);
20    else
21        printf("%d is not an Armstrong number.", num);
22
23    return 0;
24}
25

1#include <stdio.h>
2#include <math.h>
3void main ()
4{
5    int n,t,r,c,s=0;
6    printf("Enter the number: ");
7    scanf("%d",&n);
8    t=n;
9
10        while(t!=0)
11        {
12            r=t%10;
13            c=pow(r,3);
14            s=s+c;
15            t=t/10;
16        }
17
18        if(s==n)
19            printf("Armstrong");
20        else
21            printf("Not Armstrong");
22}
23

1#include <stdio.h>
2#include <stdlib.h>
3#include <math.h>
4
5int cube(int a)
6{
7    int c;
8    c =  a*a*a;
9    return c;
10}
11
12int armnum(int *a)
13{
14    int x = *a, n = 0, rem, r = 0;
15    while (x != 0) {
16        x /= 10;
17        n++;
18    }
19    x = *a;
20    while (x != 0) {
21        rem = x % 10;
22        r += cube(rem);
23        x /= 10;
24    }
25    if(r == *a){
26        return 1;
27    }
28}
29
30int main()
31{
32    int a, y;
33    scanf("%d", &a);
34    y = armnum(&a);
35    if(y == 1){
36        printf("It is an Armstrong number.");
37    }
38    else{
39        printf("It is not an Armstrong number.");
40    }
41}