diff --git a/tre.c b/tre.c
new file mode 100644
index 0000000..81c9558
--- /dev/null
+++ b/tre.c
@@ -0,0 +1,151 @@
+#include<stdio.h>
+#include<stdlib.h>
+struct node
+{
+    int ProcessID;
+    int busttime;
+    int startingtime;
+    int waitingtime;
+    int leftback;
+    int turnaroundtime;
+    struct node *link;
+};
+
+void main()
+{
+    int i;
+    int root=1;
+    int id;
+    int bustt;
+    int k;
+    int chip=0;
+    int count;
+    int pitin;
+    int totalwait,totalturn;
+    int currenttime;
+    int timeslice;
+    struct node *temp, *head,*tail,*ptr1,*ptr,*temp1;
+    printf("Enter the Time Slice");
+    scanf("%d",&timeslice);
+    while(root=1)
+    {
+        temp=(int*)malloc(sizeof(struct node*));
+
+        if (temp==NULL)
+        {
+            printf("Memmory overflow");
+            break;
+        }
+        else
+        {
+            printf("3455");
+            temp->link=NULL;
+            printf("456");
+            printf("Enter The process ID");
+            scanf("%d",&id);
+            printf("123");
+            temp->ProcessID=id;
+            printf("345");
+            printf("Enter Bust Time ");
+            scanf("%d",&bustt);
+            temp->leftback=bustt;
+            temp->busttime=bustt;
+            if (head==NULL)
+            {
+                head=temp;
+            }
+            else
+            {
+                ptr=head;
+                while (ptr->link!=NULL)
+                {
+                    ptr=ptr->link;
+                }
+                ptr->link=temp;
+            }
+        }
+            printf("Do You Want Enter another Process? Yes-1 & No- 0");
+            scanf("%d",&root);
+    }
+    printf ("\n \n Deatails You Enterd\n" );
+    ptr=head;
+    count=0;
+    while(ptr!=NULL)
+    {
+        printf("\nProcess ID=%d",ptr->ProcessID);
+        printf("\nBust Time=%d",ptr->busttime);
+        ptr=ptr->link;
+        count=count+1;
+    }
+    currenttime=0;
+    pitin=0;
+    ptr=head;
+    while (ptr->link!=NULL)
+    {
+        ptr=ptr->link;
+    }
+    ptr->link=head;
+    ptr=head;
+    while(chip<=count)
+    {
+        if (ptr->leftback==0)
+        {
+            ptr=ptr->link;
+        }
+        else
+        {
+            while(pitin<=timeslice)
+            {
+              if (ptr->busttime==ptr->leftback)
+               {
+                  ptr->waitingtime=currenttime;
+                  ptr->startingtime=currenttime;
+
+               }
+                currenttime=currenttime+1;
+                ptr->leftback=ptr->leftback-1;
+                pitin=pitin+1;
+                if (ptr->leftback==0)
+                {
+                    ptr->turnaroundtime=currenttime-ptr->startingtime;
+                    ptr=ptr->link;
+                    chip=chip+1;
+                    break;
+                }
+
+            }
+
+
+        }
+
+    }
+    ptr=head;
+    while(ptr->link!=head)
+    {
+        ptr=ptr->link;
+
+    }
+    ptr->link=NULL;
+    ptr=head;
+    totalwait=0;
+    totalturn=0;
+    while(ptr!=NULL)
+    {
+        printf("\n The Process ID=%d",ptr->ProcessID);
+        printf("\nThe Waiting Time=%d",ptr->waitingtime);
+        printf("\nTurn Around TIme=%d",ptr->turnaroundtime);
+        printf("\n Bust Time =",ptr->busttime);
+        totalwait=totalwait+ptr->waitingtime;
+        totalturn=totalturn+ptr->turnaroundtime;
+        ptr=ptr->link;
+
+    }
+    totalwait=totalwait/count;
+    totalturn=totalturn/count;
+    printf("Average Waiting Time= %d",totalturn);
+    printf("Averaga Turn Around Time=%d",totalturn);
+
+
+
+
+}