1.cpp

学生结构

#include<iostream.h>
struct person
{
	char name[20];
	unsigned long id;
	float result;
};

person getperson()
{
	person temp;
	cout<<"please enter one's information.\n";
	cin>>temp.name>>temp.id>>temp.result;
	return temp;
}

void main()
{
	person student[100];
		int i=0;
	    do
		{
			student[i]=getperson();
			i++;
		}	while(student[i-1].name!="exit");
	person temp;
	for(int k=1;k<i;k++)
	{
		for (int j=0;j<=i-k;i++)
	{
			if(student[j].result>student[j+1].result)
	{
	temp=student[j];
	student[j]=student[j+1];
	student[j+1]=temp;
	}
	}
	}
	for(int n=0;n<i;n++)
		cout<<student[n].name<<"     "<<student[n].id<<"     "<<student[n].result<<endl;
}