QUEUE Imlementation

queue.cpp

#include<iostream>

using namespace std;

int QUEUE[100], s_of_element, front, back;

void enqueue(void){
    int temp;
    if(back == s_of_element){
        cout << "QUEUE IS FULL" << endl;
    }else{
        cout << "\nEnter a value to be pushed: ";
        cin >> temp;
        QUEUE[back++] = temp;
    }
}

int dequeue(void) {
    if(front == back){
        cout << "QUEUE IS EMPTY" << endl;
    }else{
        return QUEUE[front++];
    }
}

void show(void){
    if(front != back){
        cout << "The elements of QUEUE is ...... " << endl;
        for(int i=front; i < back; i++)
            cout << "The Element : " << QUEUE[i] << endl;
        cout << "\n\nPress Next Choice " << endl;
    }else{
        cout << "The QUEUE is empty " << endl;
    }
}

int main(void){
    int choice;
    front = 0, back = 0;
    cout << " Simple QUEUE Implementation using Array 0" << endl;
    cout << "Enter the size of QUEUE MAX=100:  ";
    cin >> s_of_element;
    cout << " 1.INSERT(ENQUEUE)\n 2.DELETE(DEQUEUE)\n 3.SHOW\n 4.EXIT" << endl;
    do{
        cout << "Enter YOUR Choice :";
        cin >> choice;
        switch(choice){
            case 1:
                enqueue();
                break;
            case 2:
                cout << "The dequeued element is " << dequeue() << endl;
                break;
            case 3:
                show();
                break;
            case 4:
                cout << "\n EXITING....." << endl;
                break;
            default:
                cout << "\n\t Invaild option " << endl;
                break;
                
        }
    }while(choice != 4);
    return 0;
}