sorting algorithm not working correctly

[System_Error]

I can't seem to get this sorting alogorithm to work:

#include <iostream>


void sortAssending(int nums[], int size);

int main()
{
    int nums[] = {175,167,160,164,183,187,188,179,176,175,
                  169,175,176,178,165,160,173,165,187,178};
    sortAssending(nums, 20);
    for (int i=0; i<20; i++)
    {
        std::cout << nums[i] << std::endl;
    }
    
    system("PAUSE");
}

void sortAssending(int nums[], int size)
{
     for (int start=0; start<size; start++)
     {
         for (int end=size-1; end>=0; end--)
         {
             if (nums[start] > nums[end])
             {
                 int temp = nums[start];
                 nums[start] = nums[end];
                 nums[end] = temp;
             }
         }
     }
}

It seems to do everything right except the very end. Can anyone spot the problem?