What is wrong in this code

#1

#include
using namespace std;
int main()
{
int cars;
long long int cno,m,n;
cin>>cars;
for(int i=1;i<=cars;i++)
{
int ans=0,sum=0;
cin>>cno;
while(n>0)
{
m=cno%10;
if((m%2)==0)
{
ans=ans+m;
}
else
{
sum=sum+m;
}
n=n/10;

	 }
	 if((ans%4)==0)
	 {
		 cout<<"yes";
	 }
	 else if((sum%3)==0)
	 {
		 cout<<"yes";
	 }
	 else
	 {
		 cout<<"no";
	 }


 }
return 0;

}

#2

@Subrat in while loop n>0 but what is n you haven’t assigned it anything

#3

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