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  • C++ vector 实例

    #include <string>
    #include <iostream>
    #include <vector>
    #include <algorithm>
    
    using namespace std;
    
    int main()
    {
    	vector<int> fi;
    	cout<<fi.size()<<endl;
    	//输出0
    	
    	vector<int> se(6,20);
    	cout<<se.size()<<endl;
    	//输出6 
    	
    	for(vector<int>::iterator it = se.begin(); it<se.end(); it++)
    	{
    		cout << " " << *it;
    	}
    	cout << endl;
    	//输出20 20 20 20 20 20
    	
    	vector<int> th(se.begin()+2,se.end());
    	cout<<se.size()<<endl;
    	
    	for(vector<int>::iterator it = th.begin(); it<th.end(); it++)
    	{
    		cout << " " << *it;
    	}
    	cout << endl;
    	//输出20 20 20 20  
    	
    	vector<char> str(10,'A'); //初始化为包含10个'A'字符的数组
    	str.push_back('B'); // 现在str有11个字符
    	str.push_back('C'); // 现在str有12个字符
    	printf("%c",str[0]); //输出A
    	printf("%c",str[9]); //输出A
    	printf("%c",str[10]); //输出B
    	printf("%c",str[11]); //输出C
    	
    	return 0;
    }
    

      

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  • 原文地址:https://www.cnblogs.com/CodeWorkerLiMing/p/11073126.html
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