Help me in solving LPYAS151 problem

help
,
1

My issue

ol.cpp: In function ‘int main()’:
sol.cpp:6:4: error: ‘cin’ was not declared in this scope; did you mean ‘sin’?
6 | cin>>n;
| ^~~
| sin
sol.cpp:22:12: error: ‘cout’ was not declared in this scope
22 | cout<<“Armstrong”;
| ^~~~
sol.cpp:24:9: error: ‘cout’ was not declared in this scope
24 | else cout<<“Not Armstrong”;
| ^~~~

My code

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

int main() {
   int n;
   cin>>n;
   int original_number = n;
   int no_of_digits = 0;
   while(n!=0){
       n = n/10;
       no_of_digits = 0;
   }
   n = original_number;
   int sum = 0;
       while(n!=0){
           int last_digit = n%10;
           sum += pow(last_digit, no_of_digits);
           
           n = n/10;
       }
       if(sum==original_number){
           cout<<"Armstrong";
   }
   else cout<<"Not Armstrong";
}

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