理解函数指针

#include "stdafx.h"
#include <iostream>
#include <algorithm>
using namespace std;


void myprint(int a[], int length)
{
for (int i = 0; i < length ; i++)
{
cout << a[i] << endl;
}
}
void mysort(int a[], int length, bool(*pa)(int,int))
{
for (int i = 0; i < length - 1; i++)
{
for (int j = 0; j < length - 1 - i; j++)
{
if (pa(a[j],a[j+1]))
{
int temp = a[j];
a[j ] = a[j+1];
a[j+1] = temp;
}
}
}
}


bool comp(int a, int b)
{

return a > b ? true : false;

        //return a > b ? true : false;

}


int _tmain(int argc, _TCHAR* argv[])
{
int a[5] = { 3, 2, 6, 1, 5 };

mysort(a, 5,comp);

//sort(a,a+5,comp);

myprint(a,5);
system("pause");
return 0;
}