#include <stdio.h>
int main()
{float average(float array[ ],int n);
 float score1[5]={98.5,97,91.5,60,55};
 float score2[10]={67.5,89.5,99,69.5,77,89.5,76.5,54,60,99.5};
 printf("The average of class A is %6.2f\n",average(score1,5));
 printf("The average of class B is %6.2f\n",average(score2,10));
 return 0;
 }

float average(float array[ ],int n)
 {int i;
  float aver,sum=array[0];
  for(i=1;i<n;i++)
    sum=sum+array[i];
  aver=sum/n;
  return(aver);
}