191 lines
2.9 KiB
C++
191 lines
2.9 KiB
C++
#include <iostream>
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using namespace std;
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class queue
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{
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int data[20];
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int f, r;
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public:
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queue()
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{
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f = -1;
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r = -1;
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}
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int isempty()
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{
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if (f == -1)
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{
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return 1;
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}
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else
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{
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return 0;
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}
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}
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int isfull()
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{
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if (r >= 20)
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{
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return 1;
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}
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else
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{
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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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{
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if (isfull() == 1)
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{
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cout << "job queue is full" << endl;
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}
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else
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{
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if (f == -1)
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f++;
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r++;
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data[r] = x;
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}
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}
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void dequeue()
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{
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int x;
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if (isempty())
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{
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cout << "job queue is empty" << endl;
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}
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else
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{
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x = data[f];
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f++;
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cout << x << "Job deleted " << endl;
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}
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}
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void disp()
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{
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cout << "job queue is as :" << endl;
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for (int i = f; i <= r; i++)
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{
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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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{
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int ch, n, x, d;
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queue q;
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cout << "Enter the no. of jobs in queue. " << endl;
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cin >> n;
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cout << "Enter jobs " << endl;
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for (int i = 0; i < n; i++)
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{
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cin >> d;
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q.enqueue(d);
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}
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do
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{
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cout << "**********MENU**********" << endl;
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cout << "1)Add job " << endl;
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cout << "2)Delete job " << endl;
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cout << "3)Display" << endl;
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cout << endl;
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cout << "Enter your choice " << endl;
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cin >> ch;
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switch (ch)
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{
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case 1:
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cout << "Enter the job to be added " << endl;
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cin >> d;
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q.enqueue(d);
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cout << "Job added" << endl;
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q.disp();
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break;
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case 2:
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q.dequeue();
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q.disp();
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break;
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case 3:
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q.disp();
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break;
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default:
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cout << "Invalid choice" << endl;
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break;
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}
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cout << "Do you want to continue" << endl;
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cout << "1. YES" << endl;
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cout << "2. NO" << endl;
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cin >> x;
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} while (x == 1);
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}
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/* ~~~~~~~~~~~~~~~~~~~~~~~~~~ Output ~~~~~~~~~~~~~~~~~~~~~~~~~
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Enter the no. of jobs in queue.
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10
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Enter jobs
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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**********MENU**********
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1)Add job
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2)Delete job
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3)Display
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Enter your choice
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3
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job queue is as :
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1 2 3 4 5 6 7 8 9 10
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Do you want to continue
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1. YES
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2. NO
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1
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**********MENU**********
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1)Add job
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2)Delete job
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3)Display
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Enter your choice
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11
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Invalid choice
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Do you want to continue
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1. YES
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2. NO
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1
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**********MENU**********
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1)Add job
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2)Delete job
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3)Display
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Enter your choice
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2
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1Job deleted
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job queue is as :
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2 3 4 5 6 7 8 9 10
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Do you want to continue
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1. YES
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2. NO
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2
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
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