selection sort for my numbers structures

selection-sort.c

#include <stdio.h>
#include "numbers.h" // https://gist.github.com/911872

void selectionSort(struct numbers*);
void numberSwap(struct numbers*, int, int );

int main()
{
    struct numbers myNumbers = generateRandoms(2,200);
    int i;
    for (i = 0; i < myNumbers.size; i++)
        printf("%d ", myNumbers.values[i]);
    printf("\n");
    selectionSort(&myNumbers);
    for (i = 0; i < myNumbers.size; i++)
        printf("%d ", myNumbers.values[i]);
    printf("\n");
    return 0;
}

void selectionSort(struct numbers *myNumbers)
{
    int i, j, min;
    for (i = 0; i < myNumbers->size; i++)
    {
        min = i;
        for (j = i + 1; j < myNumbers->size; j++)
        {
            if (myNumbers->values[j] < myNumbers->values[min])
                min = j;

        }
        numberSwap(myNumbers, min, i);
    }
}

void numberSwap(struct numbers *myNumbers, int a, int b)
{
    int temp;
    temp = myNumbers->values[b];
    myNumbers->values[b] = myNumbers->values[a];
    myNumbers->values[a] = temp;
}