diff --git a/README.md b/README.md
index 868e0ef..fa7c569 100644
--- a/README.md
+++ b/README.md
@@ -1,65 +1,81 @@
-# Student_registration_management_system
 #include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 
+#define MAX_STUDENTS 100
+
+// Structure to represent a student
 struct Student {
-    char id[20];
-    char clas[20];
-    char name[20];
-    double score1;
-    double score2;
-    double score3;
-    double score;
+    int id;
+    int class;
+    float grade1;
+    float grade2;
+    float grade3;
 };
 
-// Function prototypes
-void inputStudent(struct Student *stu);
-void deleteStudent(struct Student *stu, int *numStudents);
-void selectStudent(struct Student *stu, int numStudents);
+// Function to insert a new student into the array and maintain the sorting order
+void insertStudent(struct Student students[], int *numStudents, struct Student newStudent) {
+    // Check if the array is full
+    if (*numStudents >= MAX_STUDENTS) {
+        printf("Error: Array is full. Cannot insert more students.\n");
+        return;
+    }
 
-int main() {
-    struct Student students[100];  // Adjust the size as needed
-    int numStudents = 0;
-    int option;
+    // Check if the new student ID already exists
+    for (int i = 0; i < *numStudents; ++i) {
+        if (students[i].id == newStudent.id) {
+            printf("Error: Student with ID %d already exists.\n", newStudent.id);
+            return;
+        }
+    }
 
-    do {
-        // Display menu
-        printf("1. Input\n2. Delete\n3. Select\n4. Order\n5. Output\n6. Quit\n");
-        printf("Please input your option: ");
-        scanf("%d", &option);
+    // Find the position to insert the new student based on class and total grade
+    int insertIndex = 0;
+    while (insertIndex < *numStudents &&
+           (students[insertIndex].class < newStudent.class ||
+            (students[insertIndex].class == newStudent.class && 
+             students[insertIndex].grade1 + students[insertIndex].grade2 + students[insertIndex].grade3 > 
+             newStudent.grade1 + newStudent.grade2 + newStudent.grade3))) {
+        ++insertIndex;
+    }
 
-        switch (option) {
-            case 1:
-                inputStudent(&students[numStudents]);
-                numStudents++;
-                break;
-            case 2:
-                deleteStudent(students, &numStudents);
-                break;
-            case 3:
-                selectStudent(students, numStudents);
-                break;
-            // Add cases for other options (order, output) if needed
-            case 6:
-                printf("Exiting the program.\n");
-                break;
-            default:
-                printf("Invalid option. Please try again.\n");
-        }
-    } while (option != 6);
+    // Shift elements to make room for the new student
+    for (int i = *numStudents; i > insertIndex; --i) {
+        students[i] = students[i - 1];
+    }
 
-    return 0;
-}
+    // Insert the new student at the correct position
+    students[insertIndex] = newStudent;
 
-void inputStudent(struct Student *stu) {
-    
-}
+    // Increment the number of students in the array
+    (*numStudents)++;
+
+    // Display the updated student information
+    for (int i = 0; i < *numStudents; ++i) {
+        printf("%d %d %.2f %.2f %.2f\n", students[i].id, students[i].class, 
+               students[i].grade1, students[i].grade2, students[i].grade3);
 
-void deleteStudent(struct Student *stu, int *numStudents) {
-   
+        // Check if the current student is the newly inserted one
+        if (i == insertIndex) {
+            printf("inserted\n");
+        }
+    }
 }
 
-void selectStudent(struct Student *stu, int numStudents) {
-    
+int main() {
+    // Initialize array with three students
+    struct Student students[MAX_STUDENTS] = {
+        {10001, 11, 99.5, 88.5, 89.5},
+        {10002, 12, 77.9, 56.5, 87.5},
+        {10003, 11, 92.5, 99.0, 60.5}
+    };
+
+    // Number of students in the array
+    int numStudents = 3;
+
+    // New student information (you can modify this based on user input)
+    struct Student newStudent = {10004, 11, 23.4, 45.6, 99.0};
+
+    // Insert the new student and display the updated information
+    insertStudent(students, &numStudents, newStudent);
+
+    return 0;
 }