#include<stdio.h> 

int main()
{

int n,num,sum,digit;

printf("Enter a Number:\n");
scanf("%d",&n);
num=n;
sum=0;

while(n!=0)
{
 digit=n%10;
 sum=sum+digit*digit*digit;
 n=n/10;
}
if(num==sum)
{ printf("The Sum no %d is an armstrong number",num);
}
else
{ printf("The Sum no %d is not an armstrong number",num);
}

return 0;
}
     
           
Note: Need to be arranged in compiler after copied
   

 OutPut:

Enter a Number: 153 The Sum no 153 is an armstrong number