Test case failure

I am unable to understand why my code isn’t able to pass any test cases. kindly look into my code for any mistakes. the question is “How to reverse a number”

#include
using namespace std;
int main(){
int n,k;
cin>>n;
n!<=0;
while(k!=0){
int m=n%10;
k=n/10;
n=k;
cout<<m;
}
return 0;
}

hi @arjunsinha141_59b0f79e7d3474f4 refer https://www.programiz.com/c-programming/examples/reverse-number