排序好后写入文件

  1 #include <stdio.h>

  2 #include <string.h>

  3 #include <stdlib.h>

  4 

  5 struct person{

  6         char *number;

  7         char *name;

  8         int score;

  9 };

 10 

 11 int main()

 12 {

 13         struct person arr[5];

 14         FILE *fp = fopen("src", "r");

 15         FILE *fp1 = fopen("dest", "a+");

 16         if(NULL == fp)

 17         {

 18                 perror("fopen");

 19                 return 1;

 20         }

 21         char *line = NULL;

 22         int len = 0, i = 0, j = 0;

 23         char pn[5][50] = {0};

 24 

 25         while ((getline(&line, &len, fp)) != -1)

 26         {

 27                 j = 0;

 28                 while(*line != '\n'){

 29                                 *(*(pn+i)+j) = *line++;

 30                                 j++;

 31                 }

 32                 i++;

 33         }

 34 

 35         char *str;

 36         int m = i;

 37         char *brr[3];

 38         char *tmp;

 39         for(i=0; i<m; i++)

 40         {

 41                 tmp = *(pn+i);

 42                 for(j=0; j<3; j++){

 43                         str = strstr(tmp, "\t");

 44                         *(brr+j) = strtok(tmp, "\t");

 45                         tmp = str + 1;

 46                 }

 47                 arr[i].number = *(brr+0);

 48                 arr[i].name = *(brr+1);

 49                 arr[i].score = atoi(*(brr+2));

 50                 printf("%s %s %d\n", arr[i].number, arr[i].name, arr[i].score);

 51         }

 52 

 53         struct person ttmp;

 54         for(i=0; i<m; i++)

 55         {

 56                 for(j=i; j<m; j++)

 57                 {

 58                         if(arr[i].score < arr[j].score)

 59                         {

 60                                 ttmp = arr[i];

 61                                 arr[i] = arr[j];

 62                                 arr[j] = ttmp;

 63                         }

 64                 }

 65         }

 66 

 67         char show[20];

 68         for(i=0;i<m;i++){

 69                 fputs(arr[i].number,fp1);       fputs("\t",fp1);

 70                 fputs(arr[i].name,fp1);         fputs("\t",fp1);

 71                 sprintf(show,"%d",arr[i].score);

 72                 fputs(show,fp1);                fputs("\n",fp1);

 73         }

 74 

 75         fclose(fp);

 76         fclose(fp1);

 77 }