//使用向量::插入函数来插入元素集的位置
#include <vector>
#include <iostream>
int main() {
using namespace std;
// Instantiate a vector with 4 elements, each initialized to 90
vector<int> vecIntegers(4, 90);
cout << "The initial contents of the vector are: ";
vector<int>::iterator iElement;
for (iElement = vecIntegers.begin()
; iElement != vecIntegers.end(); ++iElement) {
cout << *iElement << ' ';
}
cout << endl;
// Insert 25 at the beginning
vecIntegers.insert(vecIntegers.begin(), 25);
cout << "The vector after inserting an element at the beginning: ";
for (iElement = vecIntegers.begin()
; iElement != vecIntegers.end(); ++iElement) {
cout << *iElement << ' ';
}
cout << endl;
// Insert 2 numbers of value 45 at the end
vecIntegers.insert(vecIntegers.end(), 2, 45);
cout << "The vector after inserting two elements at the end: ";
for (iElement = vecIntegers.begin()
; iElement != vecIntegers.end(); ++iElement) {
cout << *iElement << ' ';
}
cout << endl;
// Another vector containing 2 elements of value 30
vector<int> vecAnother(2, 30);
// Insert two elements from another container in position [1]
vecIntegers.insert(vecIntegers.begin() + 1, vecAnother.begin(),
vecAnother.end());
cout << "The vector after inserting contents from another ";
cout << "in the middle:" << endl;
for (iElement = vecIntegers.begin()
; iElement != vecIntegers.end(); ++iElement) {
cout << *iElement << ' ';
}
return 0;
}