冒泡，代码哪错了

#include<iostream>
using namespace std;
int main()
{
	cout << "10个数示例";
	int arr[10];
	int emp = 0;
	for (int i = 0; i < 10; i++)
	{
		cin >> arr[i];
	}


	for (int fi = 0; fi < 9; fi++)
	{
		int se = fi + 1;
		for (int j = 0; j < 9; j++)
		{
			if (arr[se] < arr[fi])
			{
				emp = arr[fi];
				arr[fi] = arr[se];
				arr[se] = emp;
			}
		}
	}


	for (int m = 0; m < 9; m++)
	{
		cout << arr[m];
	}
}