AVERAGE HEIGHT

#include <iostream>
#include<cstdlib>
#include<cmath>
using namespace std;
typedef struct person{
double age;
double height;
}PERSON;
void create_person(PERSON *person0);
double average_height(PERSON person0[], int sizE);

void display_person(PERSON person0);
int main()
{
const int sizE=2;
PERSON persons [sizE];
for (int i=0;i<sizE;i++){
  create_person( &persons[i]);
  display_person( persons[i]);

}
average_height(persons,sizE);
cout<<""<<average_height(persons,sizE);

    return 0;
}
double average_height(PERSON person0[], int sizE){
double n=0,sum=0,avg;
for (int i=0;i<sizE;i++){
    if(person0[i].age>20){
            sum+=person0[i].height;
            n++;
}
}
avg=sum/n;
return avg;
}
double n(PERSON person0[], int sizE){
double n=0;
for (int i=0;i<sizE;i++){
    if(person0[i].age>20){
            n++;
    }
}
return n;
}
void create_person(PERSON *person0){
person0->age=rand()%100+20.;
person0->height=rand()%56+150.;
}
void display_person(PERSON person0){
cout<<"person details"<<endl;
cout<<"age"<<person0.age<<endl;
cout<<"height"<<person0.height<<endl;
}