Calculate percentile of Students in a class using C++

/*calculate percentile of student...i did hardcode
we can get the value at run time using input fucntion*/


#include<iostream.h>
using namespace std;

int main()
{
 //a[0]=first candidate and so on
    int a[]={25,60,80,70,26},n=5,i,j;//n=no. of candidate
    int percent;
    int count;
       for( i=0;i<=n-1;i++)
         { 
             count=0;
             for(j=0;j<=n-1;j++)
               { 
                   if(a[i]>a[j])
                    {
                       count=count+1;
                    }
                }

                     percent = (count * 100) / (n-1); 

               cout << "\n the percentile of " << " a ["<<i<<"] " << percent ;

          }
 
} //End of main

/*OUTPUT:-
1-the percentile ofa[0]0

2-the percentile ofa[1]50 

3-the percentile ofa[2]100 

4-the percentile ofa[3]75 

5-the percentile ofa[4]25
*/