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  1. #include <iostream>
  2. using namespace std;
  3. void showArray(int numbers[], const int SIZE);
  4.  
  5. int main() {
  6. 	//____________________________________________________________
  7. 	//| Intel processors                                         |
  8. 	//|1974- 8086 - Each instruction is 8 bits: 01001010         |
  9. 	//|      80186                                               |
  10. 	//|1985- 80286                                               |
  11. 	//|                                                          |
  12. 	//|1991- 80386- 16 bit processor (instructions are 16 bits)  |
  13. 	//|             10101010101010101                            |
  14. 	//|                                                          |
  15. 	//|1995- 80486 32 bit processor (32 bit instructions)        |
  16. 	//|            100101010010101010101010                      |
  17. 	//|2000- 64 bit processor - 64 bit instructions              |
  18. 	//|          1001010101001010110001011010                    |
  19. 	//|Memory addresses are 16 bits.                             |
  20. 	//|0000000000000000 00000000                                 |
  21. 	//|0000000000000001 00000000                                 |
  22. 	//|0000000000000010 00000000                                 |
  23. 	//|0000000000000011 00000000                                 |
  24. 	//|0000000000000100 00000000                                 |
  25. 	//|                                                          |
  26. 	//|0000000011001000 00000000                                 |
  27. 	//|1000   000000000                                          |
  28. 	//|1111111111111111 00000000                                 |
  29. 	//|__________________________________________________________|
  30. 	int num1;
  31. 	int num2;
  32. 	int sum;
  33. 	cin>>num1;
  34. 	cin>>num2;
  35. 	sum = num1 + num2;
  36. 	cout<<"Enter number 1: "<<num1<<endl;
  37. 	cout<<"Enter number 2: "<<num2<<endl;
  38. 	cout<<"The sum of the two numbers is: "<<num1<<" + "<<num2<<" = "<<sum<<endl;
  39. 	//Array concept:
  40. 	const int SIZE = 5;
  41. 	int numbers[SIZE] = {1,2,3,4,5};
  42. 	int values[SIZE] = {1,2,3,4,5};
  43.  
  44. 	showArray(numbers,SIZE);
  45. 	cout<<numbers<< endl;
  46. 	if(numbers == values)
  47. 	{
  48. 	cout<<"They have the same base address."<<endl;
  49. 	}
  50. 	else
  51. 	{
  52. 	cout<<"Not the same base address."<<endl;
  53. 	}
  54. 	/*
  55. 	Binary numbers (2 digits) 0 1
  56.  
  57. 	0000 0
  58. 	0001 1
  59. 	0010 2
  60. 	0011 3
  61. 	0100 4
  62. 	0101 5
  63. 	0110 6
  64. 	0111 7
  65. 	1000 8
  66. 	1001 9
  67. 	1010 A
  68. 	1011 B
  69. 	1100 C
  70. 	1101 D
  71. 	1110 E
  72. 	1111 F
  73.  
  74. 	Hexadecimal numbers: (16 digits) 0 1 2 3 4 5 6 7 8 9 A B C D E F
  75.  
  76. 	0 0 F D F C 4 8
  77. 	 00000000
  78. 	*/
  79. 	//Introduction to pointers:
  80. 	int value = 3;
  81. 	int* ptr = &value;
  82. 	cout<< value<<" pointer value transfer cell holder: "<< ptr<<endl;
  83. 	/*
  84. 	Example:
  85. 	0000000000000000000000000000001
  86. 	int numbers [3]={1,2,3};
  87. 	string cities[3] = {"New York", "Boston", "Phoenix"};
  88. 	cout << cities [1];
  89.     cities[0] 00000001 000000000000000000000000001
  90. 	          00000000
  91. 	          00000000
  92. 	          00000000
  93. 	cities[1] 00000010 000000000000000000000000010
  94. 	          00000000
  95. 	          00000000
  96. 	          00000000
  97.     cities[2] 00000011 000000000000000000000000011
  98. 	          00000000
  99. 	          00000000
  100. 	          00000000
  101.  
  102. 	*/
  103. 	string cities[3] = {"New York", "Boston", "Phoenix"};
  104. 	cout <<"String array number "<<1<<" contains : "<< cities [1]<<endl;
  105. 	//Example # 5:
  106. 	char grades[5] = {'A','B','C','D','E'};
  107. 	cout<<"Student 1 Grade: "<<grades[1]<<endl;
  108. 	/*
  109. 	[0] 01000001 = 65 = 'A' ASCII table
  110. 	D   B
  111. 	0 = 0
  112. 	1 = 1
  113. 	2 = 10
  114. 	3 = 100
  115. 	01000001= 64 + 1 = 65
  116. 	ASCII Table is the international to Standard to arange bits into numbers
  117. 	and converts them into letters
  118. 	Grade[0] 01000001 = 65 = 'A'
  119. 	Grade[1] 01000010 = 66 = 'B'
  120. 	Grade[2] 01000011 = 67 = 'C'
  121. 	Grade[3] 01000100 = 68 = 'D'
  122. 	Grade[4] 01000101 = 69 = 'E'
  123. 	*/
  124.  
  125. 	return 0;
  126. }
  127. void showArray(int numbers[], const int SIZE)
  128. {
  129. 	for(int i=0; i<SIZE; i++)
  130. 	cout<<"This is a number "<<i<< " in the array: "<< numbers[i]<<endl;
  131. }
  132.  
  133.  
Success #stdin #stdout 0s 5324KB
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stdin
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3
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stdout
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Enter number 1: 3
Enter number 2: 4
The sum of the two numbers is: 3 + 4 = 7
This is a number 0 in the array: 1
This is a number 1 in the array: 2
This is a number 2 in the array: 3
This is a number 3 in the array: 4
This is a number 4 in the array: 5
0x7ffe94d64fc0
Not the same base address.
3 pointer value transfer cell holder: 0x7ffe94d64fbc
String array number 1 contains : Boston
Student 1 Grade: B
https://ideone.com/BfJK6n
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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