Upload files to "DS/C/Lab/Week9"

DS/C/Lab/Week9/WashingMachine.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct cnode *cnptr;
+typedef struct cnode
+{
+    int data;
+    char name[100];
+    cnptr next;
+    cnptr prev;
+} cnode;
+
+cnptr last = NULL;
+
+cnptr createCnode(int val)
+{
+    cnptr temp = (cnptr)malloc(sizeof(cnode));
+    temp->data = val;
+    temp->next = NULL;
+    temp->prev = NULL;
+    return temp;
+}
+
+void insertBegin(int val, char nam[])
+{
+    cnptr temp = createCnode(val);
+    strcpy(temp->name, nam);
+    if (last == NULL)
+    {
+        last = temp;
+        last->next = last;
+        last->prev = last;
+    }
+    else
+    {
+        temp->next = last->next; // head
+        last->next->prev = temp;
+        temp->prev = last;
+        last->next = temp;
+    }
+}
+
+void deleteend()
+{
+    if (last == NULL)
+    {
+        printf("Queue is empty\n");
+    }
+    else
+    {
+        printf("Next person is %s for %d mins\n", last->name, last->data);
+        cnptr previous = last->prev;
+        previous->next = last->next;
+        last->next->prev = previous;
+        free(last);
+        last = previous;
+
+        if (last->next == last) // If the list becomes empty
+            last = NULL;
+    }
+}
+
+void traverse()
+{
+    if (last == NULL) {
+        printf("Queue is empty\n");
+        return;
+    }
+
+    cnptr current = last->next;
+    do {
+        printf("%s (%d mins) ", current->name, current->data); // Print name AND time
+        current = current->next;
+    } while (current != last->next);
+
+    printf("\n");
+}
+
+int main()
+{
+    char contin = 'y';
+    int choice;
+    while (contin == 'y')
+    {
+        printf("What do you want to do? \n 1. Add person to queue \n 2. Pass the chance to next person \n 3. View the Queue\n");
+        scanf("%d", &choice);
+        switch (choice)
+        {
+        case 1:
+            {
+                int val;
+                printf("Enter the name:\n");
+                fflush(stdin);
+                char name[100];
+                gets(name);
+                printf("Enter the time in minutes: \n");
+                scanf("%d", &val);
+                insertBegin(val, name);
+                break;
+            }
+        case 2:
+            {
+                deleteend();
+                break;
+            }
+        case 3:
+            {
+                printf("People in the Queue are\n");
+                traverse();
+                break;
+            }
+        }
+        printf("continue? (y/n)\n");
+        fflush(stdin);
+        scanf(" %c", &contin);
+    }
+
+    return 0;
+}