From 87f37495b724373d5b667673f26f1dd893c26ba0 Mon Sep 17 00:00:00 2001
From: Raushan Singh <88944944+raushan2409@users.noreply.github.com>
Date: Thu, 13 Oct 2022 19:52:57 +0530
Subject: [PATCH] Create Student_Database_management.cpp

#hactoberfest2022
---
 Student_Database_management.cpp | 173 ++++++++++++++++++++++++++++++++
 1 file changed, 173 insertions(+)
 create mode 100644 Student_Database_management.cpp

diff --git a/Student_Database_management.cpp b/Student_Database_management.cpp
new file mode 100644
index 00000000..1112874f
--- /dev/null
+++ b/Student_Database_management.cpp
@@ -0,0 +1,173 @@
+#include <iostream>
+#include <cstdio>
+#include <cstring>
+#include <cstdlib>
+#include <conio.h>
+#include <iomanip>
+
+using namespace std;
+int main()
+{
+    FILE *fp, *ft;
+    char another, choice;
+
+    struct student
+    {
+        char first_name[50], last_name[50];
+        char course[100];
+        int section;
+    };
+
+    struct student e;
+    char xfirst_name[50], xlast_name[50];
+    long int recsize;
+
+    fp=fopen("users.txt","rb+");
+
+    if (fp == NULL)
+    {
+        fp = fopen("users.txt","wb+");
+
+        if (fp==NULL)
+        {
+            puts("Cannot open file");
+            return 0;
+        }
+    }
+
+
+    recsize = sizeof(e);
+
+    while(1)
+    {
+        system("cls");
+
+        cout << "\t\t====== STUDENT DATABASE MANAGEMENT SYSTEM ======";
+        cout <<"\n\n                                          ";
+        cout << "\n\n";
+        cout << "\n \t\t\t 1. Add    Records";
+        cout << "\n \t\t\t 2. List   Records";
+        cout << "\n \t\t\t 3. Modify Records";
+        cout << "\n \t\t\t 4. Delete Records";
+        cout << "\n \t\t\t 5. Exit   Program";
+        cout << "\n\n";
+        cout << "\t\t\t Select Your Choice :=> ";
+        fflush(stdin);
+        choice = getche();
+        switch(choice)
+        {
+        case '1' :
+            fseek(fp,0,SEEK_END);
+            another ='Y';
+            while(another == 'Y' || another == 'y')
+            {
+                system("cls");
+                cout << "Enter the First Name : ";
+                cin >> e.first_name;
+                cout << "Enter the Last Name : ";
+                cin >> e.last_name;
+                cout << "Enter the Course    : ";
+                cin >> e.course;
+                cout << "Enter the Section   : ";
+                cin >> e.section;
+                fwrite(&e,recsize,1,fp);
+                cout << "\n Add Another Record (Y/N) ";
+                fflush(stdin);
+                another = getchar();
+            }
+            break;
+        case '2':
+            system("cls");
+            rewind(fp);
+            cout << "=== View the Records in the Database ===";
+            cout << "\n";
+            while (fread(&e,recsize,1,fp) == 1)
+            {
+                cout << "\n";
+                cout <<"\n" << e.first_name << setw(10)  << e.last_name;
+                cout << "\n";
+                cout <<"\n" <<e.course <<  setw(8)  << e.section;
+            }
+            cout << "\n\n";
+            system("pause");
+            break;
+
+        case '3' :
+            system("cls");
+            another = 'Y';
+            while (another == 'Y'|| another == 'y')
+            {
+                cout << "\n Enter the last name of the student : ";
+                cin >> xlast_name;
+
+                rewind(fp);
+                while (fread(&e,recsize,1,fp) == 1)
+                {
+                    if (strcmp(e.last_name,xlast_name) == 0)
+                    {
+                        cout << "Enter new the Firt Name : ";
+                        cin >> e.first_name;
+                        cout << "Enter new the Last Name : ";
+                        cin >> e.last_name;
+                        cout << "Enter new the Course    : ";
+                        cin >> e.course;
+                        cout << "Enter new the Section   : ";
+                        cin >> e.section;
+                        fseek(fp, - recsize, SEEK_CUR);
+                        fwrite(&e,recsize,1,fp);
+                        break;
+                    }
+                    else
+                        cout<<"record not found";
+                }
+                cout << "\n Modify Another Record (Y/N) ";
+                fflush(stdin);
+                another = getchar();
+            }
+            break;
+
+
+        case '4':
+            system("cls");
+            another = 'Y';
+            while (another == 'Y'|| another == 'y')
+            {
+                cout << "\n Enter the last name of the student to delete : ";
+                cin >> xlast_name;
+
+                ft = fopen("temp.dat", "wb");
+
+                rewind(fp);
+                while (fread (&e, recsize,1,fp) == 1)
+
+                    if (strcmp(e.last_name,xlast_name) != 0)
+                    {
+                        fwrite(&e,recsize,1,ft);
+                    }
+                fclose(fp);
+                fclose(ft);
+                remove("users.txt");
+                rename("temp.dat","users.txt");
+
+                fp=fopen("users.txt","rb+");
+
+                cout << "\n Delete Another Record (Y/N) ";
+                fflush(stdin);
+                another = getchar();
+            }
+
+            break;
+
+        case '5':
+            fclose(fp);
+            cout << "\n\n";
+            cout << "\t\t     THANK YOU FOR USING THIS SOFTWARE";
+            cout << "\n\n";
+            exit(0);
+        }
+    }
+
+
+    system("pause");
+    return 0;
+}