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  1. #include <iostream>
  2. #include <vector>
  3. #include <string>
  4.  
  5. struct MenuItem 
  6. {
  7.     std::string name;
  8.     std::vector<MenuItem> children;
  9. };
  10.  
  11. void printMenu(const std::vector<MenuItem> &menu, int level);
  12.  
  13. int main(void) 
  14. {
  15. 	std::vector<MenuItem> menu 
  16. 	{
  17. 	    {
  18. 	        { 
  19. 	            { "Menu Item 1" },
  20. 	            { 
  21. 	                {
  22. 	                    { "Item 1.1" },
  23. 	                    { 
  24. 	                        {
  25. 	                            { "Item 1.1.1" },
  26. 	                            { {} }
  27. 	                        },
  28. 	                        {
  29. 	                            { "Item 1.1.2" },
  30. 	                            { {} }
  31. 	                        }
  32. 	                    }
  33. 	                },
  34. 	                {
  35. 	                    { "Item 1.2" },
  36. 	                    {
  37. 	                        {
  38. 	                            { "Item 1.2.1" },
  39. 	                            { {} }
  40. 	                        },
  41. 	                        {
  42. 	                            { "Item 1.2.2" },
  43. 	                            { {} }
  44. 	                        }
  45. 	                    }
  46. 	                },
  47. 	            }
  48. 	        },
  49. 	        {
  50. 	            { "Menu Item 2" },
  51. 	            {
  52. 	                {
  53. 	                    { "Item 2.1" },
  54. 	                    {
  55. 	                        {
  56. 	                            { "Item 2.1.1" },
  57. 	                            { {} }
  58. 	                        },
  59. 	                        {
  60. 	                            { "Item 2.1.2" },
  61. 	                            { {} }
  62. 	                        }
  63. 	                    }
  64. 	                },
  65. 	                {
  66. 	                    { "Item 2.2" },
  67. 	                    {
  68. 	                        {
  69. 	                            { "Item 2.2.1" },
  70. 	                            { {} }
  71. 	                        },
  72. 	                        {
  73. 	                            { "Item 2.2.2" },
  74. 	                            { {} }
  75. 	                        }
  76. 	                    }
  77. 	                },
  78. 	            }
  79. 	        }
  80. 	    }
  81. 	};
  82.  
  83. 	printMenu( menu, 0 );
  84.  
  85. 	return 0;
  86. }
  87.  
  88. void printMenu(const std::vector<MenuItem> &menu, int level) 
  89. {
  90.     std::string prefix( level, '\t' );
  91.  
  92.     // visiting the next menu level
  93.     ++level;
  94.  
  95.     for (const auto &item : menu) 
  96.     {
  97.         std::cout << prefix << item.name << std::endl;
  98.  
  99.         printMenu( item.children, level );
  100.     }
  101. }
Success #stdin #stdout 0s 3240KB
comments (?)
stdin 
Standard input is empty
stdout 
Menu Item 1
	Item 1.1
		Item 1.1.1
			
		Item 1.1.2
			
	Item 1.2
		Item 1.2.1
			
		Item 1.2.2
			
Menu Item 2
	Item 2.1
		Item 2.1.1
			
		Item 2.1.2
			
	Item 2.2
		Item 2.2.1
			
		Item 2.2.2
https://ideone.com/YKAI8Y
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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