Why am I getting a dividing by zero error message

[Ruby The Roobster]

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?