diff --git a/C/employee_data.c b/C/employee_data.c
index aab8e44..99284a8 100644
--- a/C/employee_data.c
+++ b/C/employee_data.c
@@ -1,91 +1,137 @@
-
 #include <stdio.h>
 #include <stdlib.h>
-struct details
-{
-char name[30];
-int eid;
-int salary;
+
+struct details {
+    char name[30];
+    int eid;
+    int salary;
 };
+
 struct details emp[30];
+
 void disp(int r);
 void emp_search(int r);
 void greater(int r);
-int main()
-{
-int n,i,ch;
-printf("How many employees do you want to add?:");
-scanf("%d",&n);
-for (i=0;i<n;i++)
-{
-printf("\n-------------------------");
-printf("\nEnter details of employee- %d",i+1);
-printf("\n-------------------------");
-printf("\nEnter name:");
-scanf("%s",emp[i].name);
-printf("\nEnter employee ID:");
-scanf("%d",&emp[i].eid);
-printf("\nEnter employee salary:");
-scanf("%d",&emp[i].salary);
+void updateEmployee(int r);
+void deleteEmployee(int *r);
+void addEmployees(int *r);
+
+int main() {
+    int n = 0, ch;
+    
+    addEmployees(&n);
+
+    while(1) {
+        printf("\nMENU");
+        printf("\n-------------------------");
+        printf("\nEnter\n1 for display\n2 for searching salary > 10000\n3 for searching by employee ID\n4 to update employee details\n5 to delete employee\n6 to add more employees\n7 to exit\nEnter choice: ");
+        scanf("%d", &ch);
+
+        switch (ch) {
+            case 1: disp(n); break;
+            case 2: greater(n); break;
+            case 3: emp_search(n); break;
+            case 4: updateEmployee(n); break;
+            case 5: deleteEmployee(&n); break;
+            case 6: addEmployees(&n); break;
+            case 7: exit(0); break;
+            default: printf("Invalid choice! Please try again.\n");
+        }
+    }
+}
+
+void addEmployees(int *r) {
+    int num, i;
+    printf("How many employees do you want to add?: ");
+    scanf("%d", &num);
+    
+    for (i = *r; i < *r + num; i++) {
+        printf("\n-------------------------");
+        printf("\nEnter details of employee %d", i + 1);
+        printf("\n-------------------------");
+        printf("\nEnter name: ");
+        scanf("%s", emp[i].name);
+        printf("\nEnter employee ID: ");
+        scanf("%d", &emp[i].eid);
+        printf("\nEnter employee salary: ");
+        scanf("%d", &emp[i].salary);
+    }
+    *r += num;
 }
-while(1){
-printf("\nMENU");
-printf("\n-------------------------");
-printf("\nEnter\n1 for display\n2 for searching salary>10000\n3 for searching employee number\n4 to exit\nEnter choice:");
-scanf("%d",&ch);
-switch (ch)
-{
-case 1:
-disp(n);
-break;
-case 2:
-greater(n);
 
-break;
-case 3:
-emp_search(n);
-break;
-case 4:
-exit(0);
-break;
-}//switch closed
-}//while closed
-}//main closed
-void disp(int r)
-{
-//int n;
-printf("\nEmployee details are as follows:");
-printf("\n-------------------------------------");
-printf("\n");
-printf("\nNAME\tEID\tSALARY\t");
+void disp(int r) {
+    printf("\nEmployee details are as follows:");
+    printf("\n-------------------------------------");
+    printf("\nNAME\tEID\tSALARY\t");
 
-for (int i=0;i<r;i++)
-{
-printf("\n\n%s",emp[i].name);
-printf("\t%d",emp[i].eid);
-printf("\t%d",emp[i].salary);
-printf("\n-------------------------------------");
+    for (int i = 0; i < r; i++) {
+        printf("\n\n%s", emp[i].name);
+        printf("\t%d", emp[i].eid);
+        printf("\t%d", emp[i].salary);
+        printf("\n-------------------------------------");
+    }
 }
+
+void greater(int r) {
+    printf("Employee(s) having salary more than 10000:");
+    for (int i = 0; i < r; i++) {
+        if (emp[i].salary >= 10000) {
+            printf("\nNAME\tEID\tSALARY\t\n%s\t%d\t%d", emp[i].name, emp[i].eid, emp[i].salary);
+        }
+    }
 }
-void greater(int r){
-printf("Employee(s) having salary more than 10000:");
-for (int i=0;i<r;i++){
-if (emp[i].salary>=10000)
-{
-printf("\nNAME\tEID\tSALARY\t\n%s\t%d\t%d",emp[i].name,emp[i].eid,emp[i].salary);
+
+void emp_search(int r) {
+    int k, i;
+    printf("\nEnter the E ID you want to search: ");
+    scanf("%d", &k);
+    printf("\n-------------------------------------");
+    for (i = 0; i < r; i++) {
+        if (emp[i].eid == k) {
+            printf("\nNAME\tEID\tSALARY\t\n%s\t%d\t%d", emp[i].name, emp[i].eid, emp[i].salary);
+        }
+    }
 }
-}//for closed
-}//greater closed
-void emp_search(int r){
-int k,i;
-printf("\nEnter the E ID you want to search:");
-scanf("%d",&k);
-printf("\n-------------------------------------");
-for (int i=0;i<r;i++){
 
-if (emp[i].eid==k)
-{
-printf("\nNAME\tEID\tSALARY\t\n%s\t%d\t%d",emp[i].name,emp[i].eid,emp[i].salary);
+void updateEmployee(int r) {
+    int id, found = 0;
+    printf("Enter the employee ID to update details: ");
+    scanf("%d", &id);
+    
+    for (int i = 0; i < r; i++) {
+        if (emp[i].eid == id) {
+            found = 1;
+            printf("Updating details for %s\n", emp[i].name);
+            printf("Enter new name: ");
+            scanf("%s", emp[i].name);
+            printf("Enter new salary: ");
+            scanf("%d", &emp[i].salary);
+            printf("Details updated successfully.\n");
+            break;
+        }
+    }
+    if (found==0) {
+        printf("Employee with ID %d not found.\n", id);
+    }
 }
+
+void deleteEmployee(int *r) {
+    int id, found = 0;
+    printf("Enter the employee ID to delete: ");
+    scanf("%d", &id);
+    
+    for (int i = 0; i < *r; i++) {
+        if (emp[i].eid == id) {
+            found = 1;
+            for (int j = i; j < *r - 1; j++) {
+                emp[j] = emp[j + 1];
+            }
+            (*r)--;
+            printf("Employee with ID %d deleted successfully.\n", id);
+            break;
+        }
+    }
+    if (found==0) {
+        printf("Employee with ID %d not found.\n", id);
+    }
 }
-}
\ No newline at end of file