申请该结构体数组，容量为5，初始化5个学生的信息 使用fprintf将数组中的5个学生信息，保存到文件中去 下一次程序运行的时候，使用fscanf，将文件中的5个学生信息，写入(加载)到数组中去，并直接输出学生信息

  1 #include <stdio.h>2 #include <string.h>3 #include <unistd.h>4 #include <stdlib.h>5 #include <sys/types.h>6 #include <sys/stat.h>7 #include <fcntl.h>8 #include <pthread.h>9 #include <semaphore.h>10 #include <wait.h>11 #include <signal.h>12 #include <sys/socket.h>13 #include <arpa/inet.h>14 #include <sys/socket.h>15 #include <sys/ipc.h>16 #include <sys/sem.h>17 #include <semaphore.h>18 #include <sys/msg.h>19 #include <sys/shm.h>20 #include <sys/un.h>21 typedef struct Student22 {23     char name[16];24     int age;25     double matg_score;26     double chinese_score;27     double english_score;28     double physics_score;29     double chemistry_score;30     double bio_score;31 }Student,*node_p;32 int main(int argc, const char *argv[])33 {34     node_p H=(node_p)malloc(sizeof(Student)*5);35     if(H==NULL)36     {37         printf("空间申请失败\n");38         return -1;39     }40     strcpy((H)->name,"zhangshan");41     (H+0)->age=20;(H+0)->matg_score=88.01;(H+0)->chinese_score=99.02;(H+0)->english_score=93.05;(H+0)->physics_score=94.04;(H+0)->chemistry_score=96.06;(H+0)->bio_score=99.99;42     strcpy((H+1)->name,"lisi");43     (H+1)->age=21;(H+1)->matg_score=88.11;(H+1)->chinese_score=99.12;(H+1)->english_score=93.15;(H+1)->physics_score=94.14;(H+1)->chemistry_score=96.16;(H+1)->bio_score=99.99;44     strcpy((H+2)->name,"wangwu");45     (H+2)->age=22;(H+2)->matg_score=88.21;(H+2)->chinese_score=99.22;(H+2)->english_score=93.25;(H+2)->physics_score=94.24;(H+2)->chemistry_score=96.26;(H+2)->bio_score=99.99;46     strcpy((H+3)->name,"lingliu");47     (H+3)->age=23;(H+3)->matg_score=88.31;(H+3)->chinese_score=99.32;(H+3)->english_score=93.35;(H+3)->physics_score=94.34;(H+3)->chemistry_score=96.36;(H+3)->bio_score=99.99;48     strcpy((H+4)->name,"xiaoqi");49     (H+4)->age=24;(H+4)->matg_score=88.41;(H+4)->chinese_score=99.42;(H+4)->english_score=93.45;(H+4)->physics_score=94.44;(H+4)->chemistry_score=96.46;(H+4)->bio_score=99.99;50     FILE *fp=fopen("./06_tset.c","w");51     if(fp==NULL)                                                                                                                                                                                                                                                                                                                 52     {53         perror("fopen");54         return 1;55     }56     for(int i=0;i<5;i++)57     {58         fprintf(fp,"name=%s\t age=%d\t matg_score=%.2lf\t chinese_score=%.2lf\t english_score=%.2lf\t physics_score=%.2lf\t chemistry_score=%.2lf\t bio_score=%.2lf\n",(H+i)->name,(H+i)->age,(H+i)->matg_score,(H+i)->chinese_score,(H+i)->english_score,(H+i)->physics_score,(H+i)->chemistry_score,(H+i)->bio_score);59     }60     fclose(fp);61     fp=fopen("./06_tset.c","r");62     if(fp==NULL)63     {64         perror("报错信息");65         return 1;66     }67     char arr[10000];68     int i=0;69     while(1)70     {71         int retval=fscanf(fp,"%c",&arr[i]);72             if(retval==EOF)73             {74                 break;75             }76             i++;77     }78     for(int j=0;j<i;j++)79     {80         printf("%c",arr[j]);81     }82     fclose(fp);83     free(H);84     H=NULL;85     return 0;86 }