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  1.  
  2. #include<iostream>
  3. #include<string>
  4. using namespace std;
  5. typedef string ItemType;
  6. struct NodeType;
  7. class StackType
  8. {
  9. public:
  10. 	StackType();
  11. 	~StackType();
  12. 	void push(ItemType newItem);
  13. 	void pop();
  14. 	ItemType Top();
  15. 	bool IsFull() const;
  16. 	bool IsEmpty() const;
  17.  
  18. private:
  19. 	NodeType* topPtr;
  20. };
  21. struct NodeType{
  22. 	ItemType info;
  23. 	NodeType* next;
  24. };
  25. StackType::StackType()
  26. {
  27. 	topPtr = NULL;
  28. }
  29. StackType::~StackType()
  30. {
  31. 	NodeType* tempPtr;
  32. 	while (topPtr != NULL)
  33. 	{
  34. 		tempPtr = topPtr;
  35. 		topPtr = topPtr->next;
  36. 		delete tempPtr;
  37. 	}
  38. }
  39. void StackType::push(ItemType newItem)
  40. {
  41. 	if (IsFull())
  42. 		cout << "Error : the Stack is Full" << endl;
  43. 	else
  44. 	{
  45. 		NodeType*  location;
  46. 		location = new  NodeType;
  47. 		location->info = newItem;
  48. 		location->next = topPtr;
  49. 		topPtr = location;
  50.  
  51. 	}
  52. }
  53. void StackType::pop()
  54. {
  55. 	if (IsEmpty())
  56. 	{
  57. 		cout << "Error : The Stack Is Empty" << endl;
  58. 	}
  59. 	else
  60. 	{
  61. 		NodeType* tempPtr;
  62. 		tempPtr = topPtr;
  63. 		topPtr = topPtr->next;
  64. 		delete tempPtr;
  65. 	}
  66. }
  67. ItemType StackType::Top()
  68. {
  69. 	if (IsEmpty())
  70. 		cout << "Error : The Stack Is Empty 표시할 것 이없습니다." << endl;
  71. 	else
  72. 		return topPtr->info;
  73. }
  74. bool StackType::IsEmpty() const{
  75. 	if (topPtr == NULL)
  76. 		return true;
  77. 	else
  78. 		return false;
  79. }
  80. bool StackType::IsFull() const
  81. {
  82. 	NodeType* location;
  83. 	try
  84. 	{
  85. 		location = new NodeType;
  86. 		delete location;
  87. 		return false;
  88. 	}
  89. 	catch (std::bad_alloc exception)
  90. 	{
  91. 		return true;
  92. 	}
  93. }
  94. int main()
  95. {
  96. 	StackType Postfix;
  97. 	ItemType input;
  98. 	cout << "Input Postfix 수식: ";
  99.  	getline(cin, input);
  100. 	int i;
  101. 	int c = 0;
  102. 	int input_digit=0;// 숫자가 몇번 들어왔는지 알려주는 정수<전부쪼갬>
  103. 	int result_num = 0; // 스택에 쪼개져서 들어간 수를 다시 정수형으로 맞추기 위한 수
  104. 	int result = 0; // 연산을 위한 result
  105.  
  106. 	for (i = 0; i != input.length(); i++)
  107. 	{
  108. 		if (input[i] == ' ') // 공백을 느낌!<저장 X>
  109. 		{
  110.  
  111. 				ItemType Top = Postfix.Top(); // 전에 저장한 수를 꺼내옴
  112. 				if (isdigit(Top[0]) || Top[0] == '_') //전의 저장한 수가 숫자이거나, 단항연산자 이면
  113. 				{
  114. 					if (Top[0] == '_')  //단항연산자일경우
  115. 					{
  116. 					}
  117. 					else{
  118. 						ItemType nexttop;
  119. 						do{
  120. 							;//승수를 위한 정수
  121. 							result_num = result_num + ((atoi(Top.substr(0, Top.length()).c_str()) - 48)* pow(10, c));
  122. 							c++;
  123. 							Postfix.pop();
  124. 							if (Postfix.IsEmpty())
  125. 							{
  126. 								break;
  127. 							}
  128. 							nexttop = Postfix.Top();
  129. 						} while (!Postfix.IsEmpty() && isdigit(nexttop[0]) && result_num<10); // 입력받은수에대해 10이상의 수 계산
  130. 						Postfix.push(to_string(result_num));//최종결과 스택에 push
  131. 						c = 0; // 재 초기화
  132. 						result_num = 0; // 다시 0으로 만들어줌
  133. 					}
  134. 				}
  135. 		}
  136. 		else if (isdigit(input[i]))
  137. 		{
  138. 			Postfix.push(to_string(input[i]));
  139. 			input_digit++;
  140. 		}
  141. 		else if (input[i] == '*')
  142. 		{
  143. 			if (Postfix.Top() == "0")
  144. 			{
  145. 				Postfix.pop();
  146. 			}
  147. 			ItemType opr1 = Postfix.Top();
  148. 			Postfix.pop();
  149. 			ItemType opr2 = Postfix.Top();
  150. 			Postfix.pop();
  151. 			int opr1_ = atoi(opr1.substr(0, opr1.length()).c_str());
  152. 			int opr2_ = atoi(opr2.substr(0, opr2.length()).c_str());
  153. 			result = opr1_ * opr2_;
  154. 			Postfix.push(to_string(result));
  155. 			Postfix.push(" ");// 다음 공백을 입력받을때 만약 스택에 숫자가 존재하면 그 다다음수도
  156. 			// 연속된 수를 묶어주려는  경향이 있기때문에 그것을 방지
  157. 		}
  158. 		else if (input[i] == '+')
  159. 		{
  160. 			if (Postfix.Top() == "0")
  161. 			{
  162. 				Postfix.pop();
  163. 			}
  164. 			ItemType opr1 = Postfix.Top();
  165. 			Postfix.pop();
  166. 			ItemType opr2 = Postfix.Top();
  167. 			Postfix.pop();
  168. 			int opr1_ = atoi(opr1.substr(0, opr1.length()).c_str());
  169. 			int opr2_ = atoi(opr2.substr(0, opr2.length()).c_str());
  170. 			result = opr1_ + opr2_;
  171. 			Postfix.push(to_string(result));
  172. 			Postfix.push(" ");
  173.  
  174. 		}
  175. 		else if (input[i] == '-')
  176. 		{
  177. 			if (Postfix.Top() == "0")
  178. 			{
  179. 				Postfix.pop();
  180. 			}
  181. 			ItemType opr1 = Postfix.Top();
  182. 			Postfix.pop();
  183. 			ItemType opr2 = Postfix.Top();
  184. 			Postfix.pop();
  185. 			int opr1_ = atoi(opr1.substr(0, opr1.length()).c_str());
  186. 			int opr2_ = atoi(opr2.substr(0, opr2.length()).c_str());
  187. 			result = opr1_ - opr2_;
  188. 			Postfix.push(to_string(result));
  189. 			Postfix.push(" ");
  190. 		}
  191. 		else if (input[i] == '/')
  192. 		{
  193. 			if (Postfix.Top() == "0")
  194. 			{
  195. 				Postfix.pop();
  196. 			}
  197. 			ItemType opr1 = Postfix.Top();
  198. 			Postfix.pop();
  199. 			ItemType opr2 = Postfix.Top();
  200. 			Postfix.pop();
  201. 			int opr1_ = atoi(opr1.substr(0, opr1.length()).c_str());
  202. 			int opr2_ = atoi(opr2.substr(0, opr2.length()).c_str());
  203. 			result = opr1_ / opr2_;
  204. 			Postfix.push(to_string(result));
  205. 			Postfix.push(" ");
  206. 		}
  207. 		else if (input[i] == '%')
  208. 		{
  209. 			if (Postfix.Top() == "0")
  210. 			{
  211. 				Postfix.pop();
  212. 			}
  213. 			ItemType opr1 = Postfix.Top();
  214. 			Postfix.pop();
  215. 			ItemType opr2 = Postfix.Top();
  216. 			Postfix.pop();
  217. 			int opr1_ = atoi(opr1.substr(0, opr1.length()).c_str());
  218. 			int opr2_ = atoi(opr2.substr(0, opr2.length()).c_str());
  219. 			result = opr1_ * opr2_;
  220. 			Postfix.push(to_string(result));
  221. 			Postfix.push(" ");
  222. 		}
  223. 		else if (input[i] == '_')
  224. 		{
  225. 			ItemType pre_num = Postfix.Top();
  226. 			Postfix.pop();
  227. 			int opr1_ = atoi(pre_num.substr(0, pre_num.length()).c_str());
  228. 			result = opr1_ * -1;
  229. 			Postfix.push(to_string(result));
  230.  
  231. 		}
  232. 	}
  233. 	if (Postfix.Top() == " ")
  234. 	{
  235. 		Postfix.pop();
  236. 	}
  237. 	cout << Postfix.Top() << endl;
  238. 	Postfix.~StackType();
  239.  
  240. return 0;
  241. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp: In function 'int main()':
prog.cpp:121:76: error: 'atoi' was not declared in this scope
        result_num = result_num + ((atoi(Top.substr(0, Top.length()).c_str()) - 48)* pow(10, c));
                                                                            ^
prog.cpp:121:94: error: 'pow' was not declared in this scope
        result_num = result_num + ((atoi(Top.substr(0, Top.length()).c_str()) - 48)* pow(10, c));
                                                                                              ^
prog.cpp:130:40: error: 'to_string' was not declared in this scope
       Postfix.push(to_string(result_num));//최종결과 스택에 push
                                        ^
prog.cpp:138:35: error: 'to_string' was not declared in this scope
    Postfix.push(to_string(input[i]));
                                   ^
prog.cpp:151:58: error: 'atoi' was not declared in this scope
    int opr1_ = atoi(opr1.substr(0, opr1.length()).c_str());
                                                          ^
prog.cpp:154:33: error: 'to_string' was not declared in this scope
    Postfix.push(to_string(result));
                                 ^
prog.cpp:168:58: error: 'atoi' was not declared in this scope
    int opr1_ = atoi(opr1.substr(0, opr1.length()).c_str());
                                                          ^
prog.cpp:171:33: error: 'to_string' was not declared in this scope
    Postfix.push(to_string(result));
                                 ^
prog.cpp:185:58: error: 'atoi' was not declared in this scope
    int opr1_ = atoi(opr1.substr(0, opr1.length()).c_str());
                                                          ^
prog.cpp:188:33: error: 'to_string' was not declared in this scope
    Postfix.push(to_string(result));
                                 ^
prog.cpp:201:58: error: 'atoi' was not declared in this scope
    int opr1_ = atoi(opr1.substr(0, opr1.length()).c_str());
                                                          ^
prog.cpp:204:33: error: 'to_string' was not declared in this scope
    Postfix.push(to_string(result));
                                 ^
prog.cpp:217:58: error: 'atoi' was not declared in this scope
    int opr1_ = atoi(opr1.substr(0, opr1.length()).c_str());
                                                          ^
prog.cpp:220:33: error: 'to_string' was not declared in this scope
    Postfix.push(to_string(result));
                                 ^
prog.cpp:227:64: error: 'atoi' was not declared in this scope
    int opr1_ = atoi(pre_num.substr(0, pre_num.length()).c_str());
                                                                ^
prog.cpp:229:33: error: 'to_string' was not declared in this scope
    Postfix.push(to_string(result));
                                 ^
stdout 
Standard output is empty
https://ideone.com/MfAvLU
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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