结构体数组应用

#include <iostream>
#include <stdlib.h>
using namespace std;


struct info
{
    char num[20];
    char name[20];
    int score;
};

int main ()
{
    FILE *fp;
    int i, j;
    int sum_score = 0;
    struct info student[4], temp;

    if((fp = fopen("D:\\infomation.txt", "r")) == NULL)
    {
        cout << "File open error" << endl;
        exit(0);
    }
    for(i = 0; i < 4; i++)
    {
        fscanf(fp, "%s%s%d", &student[i].num, &student[i].name, &student[i].score);
        sum_score += student[i].score;
        cout << student[i].num << "\t" << student[i].name << "\t" << student[i].score << endl;
    }
    for(i = 0; i < 4; i++)
    {
        for(j = 0; j < 3-i; j++)
        {
            if(student[j].score > student[j+1].score)
            {
                temp = student[j];
                student[j] = student[j+1];
                student[j+1] = temp;
            }
        }
    }
    for(i = 0; i < 4; i++)
    {
        cout << student[i].num << "\t" << student[i].name << "\t" << student[i].score << endl;
    }
    return 0;
}