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  1. #include <string>
  2. #include <cstdlib>
  3. #include <fstream>
  4. #include <iostream>
  5. using namespace std;
  6.  
  7. // Interface for SafeArray class
  8. //--------------------------------
  9. class SafeArray
  10. {
  11. public:
  12.    SafeArray();
  13.    SafeArray(const SafeArray & copy);
  14.    ~SafeArray();
  15.  
  16.    bool GetElement(const int i, float & Value) const;
  17.    bool SetElement(const int i, float Value);
  18.    bool ReadArray(const string Filename);
  19.    bool WriteArray(const string Filename) const;
  20.    void Print() const;
  21.  
  22. private:
  23.    static const int SIZE = 20;
  24.    float Array[SIZE];
  25. };
  26.  
  27. // Implementation for SafeArray class
  28. //-----------------------------------
  29. SafeArray::SafeArray()
  30. {
  31.    cout << "construct\n";
  32.    for (int i = 0; i < SIZE; i++)
  33.       Array[i] = 0;
  34. }
  35.  
  36. SafeArray::SafeArray(const SafeArray & copy)
  37. {
  38.    cout << "copy\n";
  39.    for (int i = 0; i < SIZE; i++)
  40.       Array[i] = copy.Array[i];
  41. }
  42.  
  43. SafeArray::~SafeArray()
  44. {
  45.    cout << "destruct\n";
  46. }
  47.  
  48. bool SafeArray::GetElement(const int i, float & Value) const
  49. {
  50.    bool Success = false;
  51.    if ((i >= 0) && (i < SIZE))
  52.    {
  53.       Success = true;
  54.       Value = Array[i];
  55.    }
  56.    return Success;
  57. }
  58.  
  59. bool SafeArray::SetElement(const int i, float Value)
  60. {
  61.    bool Success = false;
  62.    if ((i >= 0) && (i < SIZE))
  63.    {
  64.       Success = true;
  65.       Array[i] = Value;
  66.    }
  67.    return Success;
  68. }
  69.  
  70. bool SafeArray::ReadArray(const string Filename)
  71. {
  72.    ifstream infile;
  73.    infile.open(Filename.c_str());
  74.    if (infile.fail())
  75.       return false;
  76.  
  77.    for (int i = 0; i < SIZE; i++)
  78.       infile >> Array[i];
  79.    infile.close();
  80.    return true;
  81. }
  82.  
  83. bool SafeArray::WriteArray(const string Filename) const
  84. {
  85.    ofstream outfile;
  86.    outfile.open(Filename.c_str());
  87.    if (outfile.fail())
  88.       return false;
  89.  
  90.    for (int i = 0; i < SIZE; i++)
  91.       outfile << Array[i] << endl;
  92.    outfile.close();
  93.    return true;
  94. }
  95.  
  96. void SafeArray::Print() const
  97. {
  98.    for (int i = 0; i < SIZE; i++)
  99.       cout << "Array[" << i << "] = " << Array[i] << endl;
  100. }
  101.  
  102. // Program to demonstrate SafeArray class
  103. //---------------------------------------
  104. int main()
  105. {
  106. SafeArray data1;
  107. SafeArray data2;
  108.  
  109. //data1.Print();
  110.  
  111. for (int i = -5; i < 25; i++)
  112. {
  113.    if(data1.SetElement(i, i * 0.1)){
  114.    	cout << "set " << i << " " << i * 0.1 << endl;
  115. 	}
  116. }
  117. float val;
  118. for (int i = -5; i < 25; i++)
  119. {
  120.    if(data1.GetElement(i, val)){
  121.    	cout << "get " << i << " " << i * 0.1 << endl;
  122. 	}
  123. }
  124.    return 0;
  125.  
  126.  
  127. }
Success #stdin #stdout 0s 3300KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
construct
construct
set 0 0
set 1 0.1
set 2 0.2
set 3 0.3
set 4 0.4
set 5 0.5
set 6 0.6
set 7 0.7
set 8 0.8
set 9 0.9
set 10 1
set 11 1.1
set 12 1.2
set 13 1.3
set 14 1.4
set 15 1.5
set 16 1.6
set 17 1.7
set 18 1.8
set 19 1.9
get 0 0
get 1 0.1
get 2 0.2
get 3 0.3
get 4 0.4
get 5 0.5
get 6 0.6
get 7 0.7
get 8 0.8
get 9 0.9
get 10 1
get 11 1.1
get 12 1.2
get 13 1.3
get 14 1.4
get 15 1.5
get 16 1.6
get 17 1.7
get 18 1.8
get 19 1.9
destruct
destruct
https://ideone.com/ZT2aMZ
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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