1154 - Ages

Author: Ismail Hosen

Daffodil International University

Problem Link

//Please follow from main function

#include<stdio.h>

int main(){

  int n, i=0, sum=0;

  double avg;

  while(1){

    scanf("%d", &n);

    if(n<0){

      break;

    }

    sum+=n;

    i++;

    avg=(double)sum/i;

  }

  printf("%.2lf\n",avg);

  return 0;

}