C program to calculate percentile of student array

/*calculate percentile of student...i used predefined numbers and students
we can take value from user at run time  also using input fucntion*/

#include<stdio.h>

int main() 

 {

       //a[0]=obtain marks of first student 

      int a[]={25,60,80,70,26} ; 

      int n=5 ;

      int i,j ;

     //n=no. of student 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) ; //logic to calculate percentile

                printf( "\n the percentile of a[%d] is %d", i, percent) ;

            } 

 } //end of main