Difference in execution time in C and C++

Question

I recently found this site called codechef, where you can submit solutions to problems. I had submitted two answers for a question, one in C and the other in C++. Both codes

Answer 1

I usually add these 3 lines in my code just after the main() for faster input output :

ios_base::sync_with_stdio(false);

cin.tie(NULL);

cout.tie(NULL);

So , Try this :

int main()  
{
   ios_base::sync_with_stdio(false);
   cin.tie(NULL);
   cout.tie(NULL);
   int n, k, t,num=0;
   cin>>n>>k;
   for(int i=0;i>t;
     if(t%k==0)  num++;
   }

   cout<