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