P354. Enter student information, create a file, implement a sort, insert

#include <stdio.h> #include <stdlib.h>

struct Student {char name[10];  int num;  float score_1;  float score_2;  float Score_3; float aver; }stu[6],temp;

void Save () {file*fp; int i; if ((Fp=fopen ("Stu.dat", "WB") ==null) {printf ("Cannot open file1\n"); Return } for (i=0;i<5;i++) if (fwrite (&stu[i],sizeof (struct student), 1,FP)!=1) printf ("File Write error\n"); Fclose (FP); }

void Save_1 () {file*fp; int i; if ((Fp=fopen ("Stu_sort.dat", "WB") ==null) {printf ("Cannot open file4\n"); Return } for (i=0;i<5;i++) if (fwrite (&stu[i],sizeof (struct student), 1,FP)!=1) printf ("File Write error\n"); Fclose (FP); }

void Save_2 () {file*fp; int i; if ((Fp=fopen ("Aver.dat", "WB") ==null) {printf ("Cannot open file7\n"); Return } for (i=0;i<5;i++) if (fwrite (&stu[i],sizeof (struct student), 1,FP)!=1) printf ("File Write error\n"); Fclose (FP); }

void print () {int i; FILE*FP;  if ((Fp=fopen ("Stu.dat", "RB")) ==null) {printf ("Cannot open file2\n"); Exit (0);  } for (i=0;i<5;i++) {fread (&stu[i],sizeof (struct student), 1,FP); printf ("%s\t%d\t%.2lf\t%.2lf\t%.2lf\t%.2lf\n", Stu[i].name,stu[i].num,stu[i].score_1,stu[i].score_2,stu[i]. Score_3,stu[i].aver); } fclose (FP); }

void Print_1 () {int i; FILE*FP;  if ((Fp=fopen ("Stu_sort.dat", "RB")) ==null) {printf ("Cannot open file5\n"); Exit (0); } printf ("The Aver is\n");  for (i=0;i<5;i++) {fread (&stu[i],sizeof (struct student), 1,FP); printf ("%s\t%d\t%.2lf\t%.2lf\t%.2lf\t%.2lf\n", Stu[i].name,stu[i].num,stu[i].score_1,stu[i].score_2,stu[i]. Score_3,stu[i].aver); } fclose (FP); }

void Print_2 () {int i; FILE*FP;  if ((Fp=fopen ("Aver.dat", "RB")) ==null) {printf ("Cannot open file8\n"); Exit (0);  } for (i=0;i<5;i++) {fread (&stu[i],sizeof (struct student), 1,FP); printf ("%s\t%d\t%.2lf\t%.2lf\t%.2lf\t%.2lf\n", Stu[i].name,stu[i].num,stu[i].score_1,stu[i].score_2,stu[i]. Score_3,stu[i].aver); } fclose (FP); }

Void aver () {int i,j,k,l,m; FILE*FP; if ((Fp=fopen ("Stu.dat", "RB")) ==null) { printf ("Cannot open file3\n");  exit (0);} for (i=0;i<5;i++) fread (&stu[i],sizeof (struct student), 1,FP); Fclose (FP); for (j=0;j<4;j++) { k=j;  for (l=j+1;l<5;l++)   if (stu[k].aver>stu[l].aver) k=l;    if (k!=j)   {   temp=stu[j];    stu[j]=stu[k];    stu [K]=temp;   }}}

void Insert () {int i,j,k; FILE*FP; if ((Fp=fopen ("Stu_sort.dat", "RB")) ==null) { printf ("Cannot open file6\n");  exit (0);} for (i=0;i<5;i++) Fread (&stu[i],sizeof (struct student), 1,FP); Fclose (FP); printf ("Please insert data of students num,score_1,score_2,score_3,name\n"); scanf ("%d,%f,%f,%f,%s", &stu[5].num,&stu[5].score_1,&stu[5].score_2,&stu[5].score_3,stu[5].name ); Stu[5].aver= (Stu[5].score_1+stu[5].score_2+stu[5].score_3)/3; for (j=0;j<5;j++) { if (stu[5].aver<stu[j].aver), break;} Temp=stu[5]; For (k=5;k> (j+1); k--) { stu[k]=stu[k-1];} stu[j+1]=temp; } void Main () { int i;  printf ("Please enter data of students num,score_1,score_2,score_3,name\n");  for (i =0;i<5;i++)  {  scanf ("%d,%f,%f,%f,%s", &stu[i].num,&stu[i].score_1,&stu[i].score_ 2,&stu[i].score_3,stu[i].name);   stu[i].aver= (Stu[i].score_1+stu[i].score_2+stu[i].score_3)/3;  }  save ();  print ();  Aver ();  save_1 ();  print_1 ();  insert ();  save_2 ();  print_2 (); }

P354. Enter student information, create a file, implement a sort, insert