Dormitory Management System

#include <stdio.h> #include <string.h> #include <stdlib.h> #define M 100int dirty=0;//To determine if the operation has been saved Define a store that stores information about studentsStructural bodytypedef struct{CHAR s_name[31];//student name Char s_number[16];//Student study number int d_number;//Dormitory number of the student's dorm int total;//number of students}student [M], st;//to determine whether the number of the table with the number of the repetition void S_number_judge (Student s,int t) {int i; for (i=1;i<= (s->total) -1;i++) while (strcmp ( S[i]. S_number,s[t]. S_number) {==0) {printf ("Student input failed, the number already exists, please re-enter the study number!\n"); printf ("Please enter students ' School number (15 characters):"); scanf ("%s", S[t]. S_number); GetChar (); I=1; }}//Adding student informationFunctionvoid Add (Student S) {printf ("Please enter student name (within 30 characters):"), scanf ("%s", s[++ (S->total)]. S_name); GetChar ();//GetLine break printf ("Please enter student's number (within 15 characters):"); scanf ("%s", S[s->total]. S_number); GetChar (); S_number_judge (s,s->total);//Determine whether the input number and the number of the table in the school is repeated printf ("Please enter the dorm number:"); scanf ("%d", &s[s->total]. D_number); GetChar (); Dirty=1; printf ("Add success!\n\n");} Modify student information function void Alter (Student S) {int i; int flag=0;//used to determine if the table has information about the student to be modified Char name[20]; printf ("Please enter the name of the student you want to modify:"); scanf ("%s", name); GetChar (); for (i=1;i<=s->total;i++) if (strcmp (S[i]. S_name,name) ==0) flag=i; if (!flag) printf ("The Student information you want to modify does not exist in the table!\n"); else {printf ("New information as follows: \ n"); printf ("Please enter student name (within 30 characters):"); scanf ("%s", S[flag]. S_name); GetChar (); printf ("Please enter student's number (within 15 characters):"); scanf ("%s", S[flag]. S_number); GetChar (); S_number_judge (S,flag); printf ("Please enter dorm number:"); scanf ("%d", &s[flag]. D_number); GetChar (); Dirty=1; printf ("Modified successfully!\n"); } putchar (' \ n ');} Delete Student information void Delete (Student S) {int i,j; int flag=0;//used to determine if the table has information about the student being deleted char name[20]; printf ("Please enter the name of the student you want to delete:"); scanf ("%s", name); GetChar (); for (i=1;i<=s->total;i++) if (strcmp (S[i]. S_name,name) ==0) FLag=i; if (!flag) printf ("The student you want to delete does not exist in the table!"); else {for (i=flag;i<s->total;i++) {j=i+1; strcpy (S[i]. S_NAME,S[J]. S_name); strcpy (S[i]. S_NUMBER,S[J]. S_number); S[i]. D_NUMBER=S[J]. D_number; } (S->total)--; Dirty=1; printf ("Delete succeeded!"); } printf ("\ n");} Show all student information function void Display_all (Student S) {int i; printf ("All students ' information is as follows: \ n"); printf ("Student name, student number, dormitory number \ n"); for (i=1;i<=s-> total;i++) printf ("%-20s%-15s%-5d\n", S[i]. S_name,s[i]. S_number,s[i]. D_number); Putchar (' \ n ');} Sorting functions According to the dorm number from small to large (bubbling method) void Sort_d_number (Student S) {int i,j,t; char name[30]; char number[15]; for (i=1;i<=s-> total;i++) for (j=i;j<=s->total;j++) if (S[i]. D_NUMBER&GT;S[J]. D_number) {strcpy (name,s[i]. S_name); strcpy (Number,s[i]. S_number); T=s[i]. D_number; strcpy (S[i]. S_NAME,S[J]. S_name); strcpy (S[i]. S_NUMBER,S[J]. S_number); S[i]. D_NUMBER=S[J]. D_number; strcpy (S[j]. S_name,name); strcpy (S[j]. S_number,number); S[J]. d_number=t; }}//sorting functions are ordered from small to large (bubbling method) void Sort_s_number (Student S) {int i,j,t; char name[30]; char number[15]; for (i=1;i<=s->total;i++) for (j=i;j<=s->total;j++) if (strcmp (s[i). S_NUMBER,S[J]. S_number) >0) {strcpy (name,s[i]. S_name); strcpy (Number,s[i]. S_number); T=s[i]. D_number; strcpy (S[i]. S_NAME,S[J]. S_name); strcpy (S[i]. S_NUMBER,S[J]. S_number); S[i]. D_NUMBER=S[J]. D_number; strcpy (S[j]. S_name,name); strcpy (S[j]. S_number,number); S[J]. d_number=t; The}}//query function queries with the name of the keyword (Sequential Lookup void Query_s_name (Student S) {int i,j=0; char name[31]; printf ("Enter the name of the student you are looking for (within 30 characters):"); scanf ("%s", name); GetChar () ; printf ("Find student information as follows: \ n"); printf ("Student name, student number, dormitory number \ n"); for (i=1;i<=s->total;i++) if (strcmp (Name,s[i]. S_name) {==0) {printf ("%-20s%-15s%-5d\n", S[i]. S_name,s[i]. S_number,s[i]. D_number); J=1; } if (!j) printf ("\ n lookup failed, table does not exist for the student's information!\n\n");} Query function query (binary lookup) void Query_s_number (Student S) {int i,j,top,base,mid; char number[15]; j=0; base=1; top=s-> Total; printf ("Please enter the student number you want to find:"); scanf ("%s", number); GetChar (); Sort_s_number (S); The table data in accordance with the school number from small to large order printf ("The students are looking for information as follows: \ n"); printf ("Student name, student number, dormitory number \ n"); if (strcmp (number,s[1). S_number) >=0&&strcmp (Number,s[s->total]. S_number) <=0) {while (base<=top) {mid= (base+top)/2; if (strcmp (Number,s[mid). S_number) {==0) {printf ("%-20s%-15s%-5d\n", S[i]. S_name,s[i]. S_number,s[i]. D_number); Putchar (' \ n '); J=1; Break } else if (strcmp (Number,s[mid). S_number) >0) base=mid+1; else top=mid-1; }} if (!j) printf ("\ n lookup failed, the study does not exist in the tableInformation!\n\n ");} Query function query with dorm number (binary lookup) void Query_d_number (Student S) {int i,j,m,n,base,top,mid; j=0; base=1; top=s->total; printf ("Please enter the dorm number you want to inquire:"); scanf ("%d", &i); GetChar (); Sort_d_number (S);//The table data in accordance with the dormitory number from small to large sort printf ("The search bedroom information as follows: \ n"); printf ("Student name, student number, dormitory number \ n"); if (I>=s[1]. D_number&&i<=s[s->total]. D_number) {while (base<=top) {mid= (base+top)/2; if (I==s[mid]. D_number) {m=mid; n=mid-1; while (S[m]. d_number==i) {printf ("%-20s%-15s%-5d\n", S[m]. S_NAME,S[M]. S_NUMBER,S[M]. D_number); m++; if (m>s->total) break; } if (n>0) {while (S[n]. d_number==i) {printf ("%-20s%-15s%-5d\n", S[n]. S_name,s[n]. S_number,s[n]. D_number); n--; if (n<1) break; }} j=1; Putchar (' \ n '); Break } else if (I>s[mid]. D_number) base=mid+1; else top=mid-1; }} if (!j) printf ("\ n lookup failed, the table does not have information!\n\n for the Dorm");} storage function void Save (Student S) {St Std; int i; int flag1=0,flag2=0;//Determine if the store succeeds FILE *fp; if (Fp=fopen ("Dorm_manage", "W") ==nul L) {printf ("Open file failed!\n\n"); flag1=1; exit (0);//End program} for (i=1;i<=s->total;i++) if (Fwrite (&s[i],sizeof (STD), 1,FP)!=1) {printf ("Data write error \ n \ nthe"); flag2=1; exit (0);} if (!flag1 &AMP;&AMP;!FLAG2) {printf ("Data storage succeeded!\n\n"); dirty=0;} fclose (FP);} Load record function void load (Student S) {St Std; FILE *FP; if (Fp=fopen ("Dorm_manage", "R") ==null) {printf ("Open file failed!\n\n"), exit (0),} while (!feof (FP)) fread (&s[++ (s-> Total)],sizeof (STD), 1,FP); Fclose (FP); printf ("Load data successfully!\n\n"); (s->total)--; Determine whether to save the function void Judge_save (int i,student S) {char ch, if (i) {printf ("The data in the table has been changed or not to be saved and then exited (y/n)") because the number of}//to be subtracted from the list of problems to be read out of the program; Ch=getchar (); GetChar (); while (ch!= ' n ' &&ch!= ' n ' &&ch!= ' y ' &&ch!= ' y ') {printf ("Please enter n (n) or Y (y):"); Ch=getchar (); GetChar (); } if (ch== ' Y ' | | ch== ' Y ') Save (S); }}//menus void menu () {//Menu printf ("Dormitory management \ n"); printf ("************************************* menu *********************** \ n "); printf ("1. Adding Student Information | 7. According to the dorm number from small to large order \ n "); printf ("2. Modify Student Information | 8. According to the school number from small to large order \ n "); printf ("3. Delete Student Information | 9. Show all student's information \ n "); printf ("4. Search student Information by name | 10. Save operation \ n "); PrinTF ("5. Search for student information by study number | 11. Load record \ n "); printf ("6. Search for all student information in the dorm by dormitory number | 12. Exit program \ n "); printf ("******************************************************************************\n");} void Main () {int i; Student S; s->total=0; do {menu (); printf ("Select the function you want to implement (please enter any number in the ~):"); scanf ("%d", &i); GetChar ();//Get line feed Putchar (' \ n '); switch (i) { Case 1:add (S); Break Case 2:alter (S); Break Case 3:delete (S); Break Case 4:query_s_name (S); Break Case 5:query_s_number (S); Break Case 6:query_d_number (S); Break Case 7:sort_d_number (S); printf ("Sort complete!\n\n"); Break Case 8:sort_s_number (S); printf ("Sort complete!\n\n"); Break Case 9:display_all (S); Break Case 10:save (S); Break Case 11:load (S); Break Case 12:judge_save (dirty,s); Exit (0); Break default:printf ("Select Error: Please select!\n\n between options"); Break }}while (i!=12);}

Dormitory Management System