//可以隨便更改的test函式，每次用完了就丟棄，隨時可以改。
void test(void)
{
	int in1,in2,sum;
	cout<<"Input one integer:"<<endl;
	cin>>in1;


	cout<<"Input the second integer:"<<endl;
	cin>>in2;


	if(in1>in2)
	{
		int i;
		i=in1;
		in1=in2;
		in2=i;
	}


	sum=0;


	int i;
	for(i=in1;i<=in2;i++)
	{
		sum+=i;
	}
	cout<<"The sum of the integers from "<<in1<<" to "<<in2<<" is "<<sum<<" ."<<endl;
}