Why am I getting a dividing by zero error message

[Ruby The Roobster via Digitalmars-d-learn]

Here is the output/input of the program:
Type in  data for an egg:
Width: 3
Hight: 2

object.Error@(0): Integer Divide by Zero
----------------
0x004023FE
0x0040CF9F
0x0040CF19
0x0040CDB4
0x00409033
0x00402638
0x75F86359 in BaseThreadInitThunk
0x77018944 in RtlGetAppContainerNamedObjectPath
0x77018914 in RtlGetAppContainerNamedObjectPath
Chicken:

Here is the source code:

import std.stdio;
import std.string;
void main(){
    egg[1000] data;
    data[0] = (new egg(0,0,"a"));
    for(int i = 1;i<1000;i++)
    {
        int tempx;
        int tempy;
        string tempz;
        int high = 0;
        double highs = 0;
        writeln("Type in  data for an egg:");
        write("Width: ");
        readf(" %d",&tempx);
        write("Hight: ");
        readf(" %d",&tempy);
        write("Chicken: ");
        tempz = readln();
        data[i] = new egg(tempx,tempy,tempz);
        for(int x = 0;x < i;x++)
        {
            int tempa;
            int tempb;
            double temp;
            tempa = data[x].x;
            if(tempa < 0)
                tempa-=tempa;
            tempb = data[x].y;
            if(tempb < 0)
                tempb-=tempb;
            temp = tempa / tempb;
            if(temp > highs)
            {
                highs = temp;
                high = x;
            }
        }
        tempx = data[high].x - data[i].x;
        if(tempx < 0)
            tempx-=tempx;
        tempy = data[high].y - data[i].y;
        if(tempy < 0)
            tempy-=tempy;
    }
}
class egg {
public:
    this(uint x,uint y,string name)
    {
        this.x = x;
        this.y = y;
        name = cast(string)name;
    }
    uint x;
    uint y;
    char[] name;
}

Why is this happening? Does anybody know?