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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6.  
  7. class test{
  8. 	private:
  9. 		int i;
  10.  
  11. 	public :
  12. 		 test(){}
  13. 		~test(){}
  14. 	public :
  15. 		void input(int i){
  16. 			this -> i = i;
  17. 		}
  18. 		void output(){
  19. 			cout << i << "\n";
  20. 		}
  21. 		int getNum(){
  22. 			return i;
  23. 		}
  24. };
  25.  
  26. int main(){
  27. 	vector<test> *vec = new vector<test>;
  28.  
  29. 	int num =0;
  30.  
  31. 	int v_num =0;
  32. 	cout << "生成するvectorの数---";	cin >> v_num;
  33. 	for(int i=0; i<v_num; i++){
  34. 		test t;
  35. 		t.input(num);
  36.  
  37. 		vec -> push_back(t);
  38.  
  39. 		num +=50;
  40. 	}
  41.  
  42. 	/*	vectorの要素を削除する	*/
  43. 	vector<test>::iterator it = vec->begin();
  44. 	it +=2;
  45. 	it = vec->erase(it);
  46.  
  47.  
  48. 	for(int i = 0;
  49. 	        i < vec->size();
  50. 	        i++)
  51. 	{
  52. 		test t = (test)vec->at(i);
  53. 		t.output();
  54. 	}
  55.  
  56. 	for(int i = 0;
  57. 	        i < vec->size();
  58. 	        i++)
  59. 	{
  60. 		test t = (test)vec->at(i);
  61. 		if(t.getNum() == 150)
  62. 			cout << "一致しました\n";
  63. 		if(t.getNum() == 100)	// i=100は削除済みなので実行されない:42
  64. 			cout << "一致しました\n";
  65. 	}
  66.  
  67. 	return 0;
  68. }
Runtime error #stdin #stdout 0s 3476KB
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生成するvectorの数---
https://ideone.com/64f6S8
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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