成绩处理

#include <fstream>
#include <iostream>
using namespace std; 
struct Score
{
	char num[13]; 
	char name[14];
	int cpp;
	int math;
	int english;
	int grade;
};

int main()
{    
	int i,n=0;
	void sort1(Score score[],int n); 
	Score score[300];
	ifstream infile("score.txt",ios::in);
	if(!infile)
	{
		cerr<<"open error!"<<endl;
		exit(1);
	}
	while(!infile.eof())
	{
		infile>>score[n].num>>score[n].name>>score[n].cpp>>score[n].math>>score[n].english;
		++n;
	}
	infile.close();


	for(i=0;i<-1;i++)//计算总分
	{
	 score[n].grade=score[n].cpp+score[n].english+score[n].math;	
	}
    sort1(score,n);
    //排序
	for(i=0;i<n-1;i++)//输出排序后的成绩
	{		
		cout<<score[i].num<<"   "<<score[i].name<<"   "<<score[i].cpp<<"    "<<score[i].math<<"    "<<score[i].english<<endl;
	}
	return 0;
}


void sort1(Score score[],int n) 
//排序函数 
{  
   int i,j,t;  
    for(i=0;i<n;i++)  
    {  
       for(j=0;j<n-i-1;j++)      
            if(score[j].grade<score[j+1].grade)  
            {  
                t=score[j+1].grade;  
                score[j+1].grade=score[j].grade;  
                score[j].grade=t;  
            }  
    }  
      
}