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| 1 | /* -------------------------- myNode.h ---------------------------*/ | |
| 2 | #include <iostream> | |
| 3 | #ifndef myNode_h | |
| 4 | #define myNode_h | |
| 5 | ||
| 6 | class Node {
| |
| 7 | friend void printN(Node &); | |
| 8 | - | friend class Queue; |
| 8 | + | |
| 9 | char *clientName; | |
| 10 | double clientState; | |
| 11 | Node *next; | |
| 12 | ||
| 13 | public: | |
| 14 | Node(); | |
| 15 | Node(char *, int); | |
| 16 | void setName(const char *); | |
| 17 | void setState(const double); | |
| 18 | void setNext(Node *); | |
| 19 | char* getName() const; | |
| 20 | double getState() const; | |
| 21 | Node * getNext() const; | |
| 22 | ~Node(); | |
| 23 | }; | |
| 24 | ||
| 25 | ||
| 26 | #endif | |
| 27 | ||
| 28 | ||
| 29 | ||
| 30 | ||
| 31 | ||
| 32 | /* -------------------------- myQueue.h ---------------------------*/ | |
| 33 | #include <iostream> | |
| 34 | ||
| 35 | ||
| 36 | #ifndef myQueue_h | |
| 37 | #define myQueue_h | |
| 38 | ||
| 39 | class Queue {
| |
| 40 | friend void printQ(Queue &); | |
| 41 | - | private : |
| 41 | + | |
| 42 | Node* head; | |
| 43 | Node* tail; | |
| 44 | ||
| 45 | public: | |
| 46 | ||
| 47 | Queue(); | |
| 48 | void insertNode(Node &); | |
| 49 | void deQueue(); | |
| 50 | Node *getLast(); | |
| 51 | Node *peek(); | |
| 52 | bool isEmpty(); | |
| 53 | ||
| 54 | - | void printQ(); |
| 54 | + | |
| 55 | #endif | |
| 56 | ||
| 57 | ||
| 58 | ||
| 59 | ||
| 60 | /* -------------------------- myNode.cpp ---------------------------*/ | |
| 61 | #include <iostream> | |
| 62 | #include "myNode.h" | |
| 63 | #include "myQueue.h" | |
| 64 | #include <cstring> | |
| 65 | using namespace std; | |
| 66 | ||
| 67 | Node :: Node() | |
| 68 | {
| |
| 69 | this->clientName = NULL; | |
| 70 | this->clientState=0; | |
| 71 | this->next=NULL; | |
| 72 | } | |
| 73 | ||
| 74 | Node :: ~Node() | |
| 75 | {
| |
| 76 | delete []clientName; | |
| 77 | } | |
| 78 | - | if(this) |
| 78 | + | |
| 79 | - | {
|
| 79 | + | |
| 80 | - | this->clientName = NULL; |
| 80 | + | |
| 81 | strcpy(clientName,name); | |
| 82 | this->clientState = state; | |
| 83 | - | } |
| 83 | + | |
| 84 | } | |
| 85 | ||
| 86 | ||
| 87 | void Node::setName (const char *name) | |
| 88 | {
| |
| 89 | strcpy(clientName,name); | |
| 90 | } | |
| 91 | ||
| 92 | ||
| 93 | void Node ::setState(const double state) | |
| 94 | {
| |
| 95 | this->clientState = state; | |
| 96 | } | |
| 97 | ||
| 98 | void Node ::setNext(Node *next) | |
| 99 | {
| |
| 100 | this->next=next; | |
| 101 | } | |
| 102 | ||
| 103 | char* Node :: getName() const | |
| 104 | {
| |
| 105 | return (this->clientName); | |
| 106 | } | |
| 107 | ||
| 108 | double Node :: getState() const | |
| 109 | {
| |
| 110 | return (this->clientState); | |
| 111 | } | |
| 112 | ||
| 113 | Node * Node :: getNext() const | |
| 114 | {
| |
| 115 | return (this->next); | |
| 116 | } | |
| 117 | ||
| 118 | void printN(Node &n1) | |
| 119 | {
| |
| 120 | cout << "Client Name: "<< n1.clientName; | |
| 121 | cout << " Client State: "<<n1.clientState << "$" << endl ; | |
| 122 | } | |
| 123 | ||
| 124 | ||
| 125 | ||
| 126 | /* -------------------------- myQueue.cpp ---------------------------*/ | |
| 127 | ||
| 128 | #include <iostream> | |
| 129 | using namespace std; | |
| 130 | #include "myNode.h" | |
| 131 | #include "myQueue.h" | |
| 132 | using namespace std; | |
| 133 | ||
| 134 | Queue :: Queue() | |
| 135 | {
| |
| 136 | head=NULL; | |
| 137 | tail=NULL; | |
| 138 | } | |
| 139 | ||
| 140 | void Queue :: insertNode(Node &n1) | |
| 141 | {
| |
| 142 | if (head == NULL) | |
| 143 | - | tail->next=&n1; |
| 143 | + | |
| 144 | head=&n1; | |
| 145 | } | |
| 146 | else | |
| 147 | {
| |
| 148 | tail->setNext(&n1); | |
| 149 | } | |
| 150 | tail=&n1; | |
| 151 | } | |
| 152 | ||
| 153 | void Queue :: deQueue() | |
| 154 | {
| |
| 155 | Node *myHead=head; | |
| 156 | if(!head) | |
| 157 | {
| |
| 158 | cout<< "The Queue is empty" <<endl; | |
| 159 | } | |
| 160 | else | |
| 161 | {
| |
| 162 | if(myHead == tail) //Special case if the queue had only 1 client | |
| 163 | - | head = head->next; |
| 163 | + | |
| 164 | tail=NULL; | |
| 165 | head=NULL; | |
| 166 | } | |
| 167 | else | |
| 168 | head = head->getNext(); | |
| 169 | } | |
| 170 | } | |
| 171 | ||
| 172 | Node * Queue :: getLast() | |
| 173 | {
| |
| 174 | Node *myHead=head; | |
| 175 | if(!head) | |
| 176 | {
| |
| 177 | cout<< "The Queue is empty" <<endl; | |
| 178 | return NULL; | |
| 179 | } | |
| 180 | if(myHead == tail) //Special case if the queue had only 1 client | |
| 181 | - | head = head->next; |
| 181 | + | |
| 182 | tail=NULL; | |
| 183 | head=NULL; | |
| 184 | } | |
| 185 | else | |
| 186 | head = head->getNext(); | |
| 187 | return myHead; | |
| 188 | } | |
| 189 | ||
| 190 | ||
| 191 | Node * Queue :: peek() | |
| 192 | {
| |
| 193 | return this->head; | |
| 194 | } | |
| 195 | ||
| 196 | ||
| 197 | bool Queue :: isEmpty() | |
| 198 | {
| |
| 199 | - | void Queue :: printQ() |
| 199 | + | |
| 200 | return true; | |
| 201 | - | Node *location=head; |
| 201 | + | |
| 202 | } | |
| 203 | ||
| 204 | void printQ(Queue &Q) | |
| 205 | {
| |
| 206 | Node *location=Q.head; | |
| 207 | ||
| 208 | if (!location) | |
| 209 | {
| |
| 210 | - | cout << "Client Name: "<< location->clientName; |
| 210 | + | |
| 211 | - | cout << " Client State: "<<location->clientState << "$" << endl ; |
| 211 | + | |
| 212 | - | location=location->next; |
| 212 | + | |
| 213 | while (location !=NULL) | |
| 214 | {
| |
| 215 | printN(*location); | |
| 216 | location=location->getNext(); | |
| 217 | } | |
| 218 | } | |
| 219 | ||
| 220 | ||
| 221 | ||
| 222 | ||
| 223 | /* ------------------------------------------ main.cpp --------------------------------------------------*/ | |
| 224 | #include <iostream> | |
| 225 | #include "myNode.h" | |
| 226 | #include "myQueue.h" | |
| 227 | ||
| 228 | using namespace std; | |
| 229 | ||
| 230 | void main () | |
| 231 | {
| |
| 232 | Queue q1; | |
| 233 | Node n1("Jack",210),n2("Austin",15),n3("Steve",32),n4("Sean",312);
| |
| 234 | Node * last, *peek; | |
| 235 | q1.insertNode(n1); | |
| 236 | - | q1.printQ(); |
| 236 | + | |
| 237 | q1.insertNode(n3); | |
| 238 | printQ(q1); | |
| 239 | if(!q1.isEmpty()) | |
| 240 | {
| |
| 241 | peek=q1.peek(); | |
| 242 | - | q1.printQ(); |
| 242 | + | |
| 243 | } | |
| 244 | printQ(q1); | |
| 245 | - | q1.printQ(); |
| 245 | + | |
| 246 | cout << "the node that was dequeued is " << last->getName()<<" " << last->getState() <<endl ; | |
| 247 | - | q1.printQ(); |
| 247 | + | printQ(q1); |
| 248 | q1.deQueue(); | |
| 249 | printQ(q1); | |
| 250 | q1.deQueue(); | |
| 251 | if(q1.isEmpty()) | |
| 252 | - | q1.printQ(); |
| 252 | + | |
| 253 | q1.insertNode(n4); | |
| 254 | printQ(q1); | |
| 255 | } |