Added assignment 29 (queue job)

assignment-29.cpp

@@ -0,0 +1,132 @@
+#include <iostream>
+using namespace std;
+
+class queue {
+// Class for queue.
+
+  int data[30];
+  int front,rear;
+  
+  public:
+    queue() {
+    // Constructor that initialises values for front and rear. 
+    front=-1;
+    rear=-1;
+    }
+
+  int emptyCheck() {
+  // Check if it's empty
+    if (front==-1) {
+      return 1;
+    }
+    else {
+      return 0;
+    }
+  }
+  
+  int fullCheck() {
+  // Check if it's full
+    if (rear>=30) {
+      return 1;
+    }
+    else {
+      return 0;
+    }
+  }
+
+  void enqueue(int x) {
+  // Add job to queue
+    if (fullCheck()==1) {
+      cout<<endl<<"Job queue is full."<<endl;
+    }
+    
+    else {
+      if (front==-1) {
+        front++;
+      }
+      rear++;
+      data[rear]=x;
+    }
+  }
+  
+  void dequeue() {
+  // Remove job from queue.
+    int x;
+    if (emptyCheck()) {
+      cout<<endl<<"Job queue is empty."<<endl;
+    }
+    else {
+      x=data[front];
+      front++;
+      cout<<endl<<"Job ["<<x<<"] has been deleted.";
+    }
+  }
+
+  void display() {
+  // Displaying job queue.
+    cout<<"Job queue is:\t[ ";
+    for (int i=front; i<=rear; i++) {
+      cout<<data[i]<<" | ";
+    }
+    cout<<"]"<<endl;
+  }
+};
+
+int main() {
+// Main function
+  int choice, job, totalJobs;
+  queue jobQueue;
+  
+//Input inital jobs
+  cout<<"Enter number of jobs:\t";
+  cin>>totalJobs;
+  for (int i=0; i<totalJobs; i++) {
+   cout<<endl<<"Enter job number "<<i+1<<":\t";
+   cin>>job;
+   jobQueue.enqueue(job);
+  }
+
+  while (1) {
+    cout<<endl<<"----- JOB QUEUE MENU -----"<<endl;
+    cout<<endl<<"1 -> Add job to queue"<<endl;
+    cout<<endl<<"2 -> Delete a job from queue"<<endl;
+    cout<<endl<<"3 -> Display queue"<<endl;
+    cout<<endl<<"4 -> Exit"<<endl;
+    cout<<endl<<endl<<"Choose an option (1-4):\t";
+    cin>>choice;
+    
+    switch (choice) {
+      case 1:
+        cout<<"Add additional job:\t";
+        cin>>job;
+        jobQueue.enqueue(job);
+        cout<<"\n==============\n";
+        jobQueue.display();
+        cout<<"=============\n";
+        break;
+
+      case 2:
+        jobQueue.dequeue();
+        cout<<"\n==============\n";
+        jobQueue.display();
+        cout<<"=============\n";
+        break;
+        
+      case 3:
+        cout<<"\n==============\n";
+        jobQueue.display();
+        cout<<"=============\n";
+        break;
+      
+      case 4:
+        cout<<"\n## DESIGNED AND ENGINEERED BY KSHITIJ\n## END OF CODE\n\n";
+        exit(0);
+        
+      default:
+        cout<<endl<<"Please choose a valid option (1-4)."<<endl;
+    }
+  }
+
+  return 0;
+
+}