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  1. #include <iostream> 
  2. using namespace std;  
  3.  
  4. class Queue {  
  5.  int size;  
  6.  int* queue;  
  7.  
  8.  public: 
  9.  Queue() 
  10.  {  
  11.   size = 0; 
  12.   queue = new int[100]; 
  13.  }
  14.  void add(int data) {  
  15.   queue[size] = data;  
  16.   size++; 
  17.  } 
  18.  
  19.  void print() {  
  20.   if (size == 0) {  
  21.    cout << "Queue is empty"<<endl;  
  22.    return;  
  23.   }  
  24.   for (int i = 0; i < size; i++) {  
  25.    cout<<queue[i]<<" <- "; 
  26.   }  
  27.   cout << endl; 
  28.  } 
  29. };  
  30.  
  31. class Queue2 : public Queue 
  32. {
  33.  private:
  34.    int size;  
  35.    int* queue;  
  36.  
  37.  public: 
  38.  Queue2() 
  39.  {  
  40.   size = 0; 
  41.   queue = new int[100];  
  42.  }
  43.  
  44.  //void print()
  45.  //{
  46.  // if (size == 0) {  
  47.  //  cout << "Queue is empty"<<endl;  
  48.  //  return;  
  49.  // }  
  50.  // for (int i = 0; i < size; i++) { 
  51.  //  cout<<queue[i]<<endl; 
  52.  // }  
  53.  // cout << endl; 
  54.  //}
  55. }; 
  56.  
  57.  
  58. int main() {  
  59. Queue q1;  
  60. q1.add(42); q1.add(2); q1.add(8);  q1.add(1); 
  61. q1.print(); 
  62.  
  63. Queue2 q2; 
  64. q2.add(3); q2.add(66); q2.add(128);q2.add(5);
  65. q2.add(111);q2.add(77890); 
  66. q2.print(); 
  67.  
  68.  return 0;  
  69. }
Success #stdin #stdout 0s 4504KB
comments (?)
stdin 
Standard input is empty
stdout 
42 <- 2 <- 8 <- 1 <- 
3 <- 66 <- 128 <- 5 <- 111 <- 77890 <-
https://ideone.com/jzqHUI
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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