selectionSort

#include <stdio.h>
#define N 5
void InputArray(int *pa, int n);
void OutputArray(int *pa, int n);
void selectionSort(int arr[], int n);
void swap(int *xp, int *yp);
int main(void)
{
    int a[N];
    printf("Input five numbers: ");
    InputArray(a,N);
    selectionSort(a, N);
    OutputArray(a,N);
    return 0;
}
void InputArray(int *pa, int n)
{
    for(int i = 0; i < n; i++)
    {
        scanf("%d",pa);
        pa++;
    }
}
void OutputArray(int *pa, int n)
{
    printf("output: ");
    for(int i = 0; i < n; i++)
    {
        printf("%4d",*pa);
        pa++;
    }
    printf("\n");
}
void swap(int *xp, int *yp)
{
    int temp = *xp;
    *xp = *yp;
    *yp = temp;
}

void selectionSort(int arr[], int n)
{
    int i, j, min_idx;
    for (i = 0; i < n-1; i++)
    {
        min_idx = i;
        for (j = i+1; j < n; j++)
          if (arr[j] < arr[min_idx])
            min_idx = j;
        swap(&arr[min_idx], &arr[i]);
    }
}