vector的使用注意事项

#include "iostream"  
#include "vector"  
using namespace std;  
   
int main(void)  
{  
    vector<int>array;  
    array.push_back(100);  
    array.push_back(300);  
    array.push_back(300);  
    array.push_back(500);  
    vector<int>::iterator itor;  
    for(itor=array.begin();itor!=array.end();itor++)  
    {  
        if(*itor==300)  
        {  
            itor = array.erase(itor);  
        }  
    }  
    for(itor=array.begin();itor!=array.end();itor++)  
    {  
        cout<<*itor<<" ";  
    }  
    return 0;  
}