Debug Help: Arrays & Structs

Blockchain Programming Course
#1

I’m doing the Arrays & Structs exercise but everything but FindAverageAgeWorks:

pragma solidity ^0.4.0;

contract PeopleContract{
uint a = 0;
uint p = 0;
uint e = 0;

    
struct Person{
    string name;
    uint age;
    
}    
    
    
    
    Person[] people;

    
function addPerson(string _name, uint _age){
        people.push(Person(_name, _age));
        p = p + 1;
        a = a + _age;
    }
 
function getPerson(uint _id) returns (string){
     return people[_id].name;
    }

function findAverageAge() returns (uint){
    e = a/p;
    
    return e;
    }

}

I have already tried a few things like instead of using arrayName.length I used a variable to keep track and getting rid of the for loop but turns out that wasn’t the problem. Anyone know what is?

#2

Did you populate the people array first before calling the findAverageAge() function? Otherwise you’ll get an error because you can’t divide by zero.