list::pop_front
删除列表开头的元素。
void pop_front( );
备注
第一个元素不能为空。 pop_front不会引发异常。
示例
// list_pop_front.cpp
// compile with: /EHsc
#include <list>
#include <iostream>
int main( )
{
using namespace std;
list <int> c1;
c1.push_back( 1 );
c1.push_back( 2 );
cout << "The first element is: " << c1.front( ) << endl;
cout << "The second element is: " << c1.back( ) << endl;
c1.pop_front( );
cout << "After deleting the element at the beginning of the list, "
"the first element is: " << c1.front( ) << endl;
}
要求
标头: <列表>
命名空间: std