STL_vector常见用法举例
#include <iostream>#include <vector>#include <algorithm>using namespace std;void test_init() { cout << "test_init: " << endl; vector <double> content(20); cout << content.size() << endl; vector <int> v(10, 90); cout << v.size() << endl; vector <int>::iterator it = v.begin(); while(it != v.end()) { cout << *it << ' '; ++it; } cout << endl;}void test_push_back() { cout << "test_push_back :" << endl; vector<int> v; for(int i = 0; i < 10; i++) { v.push_back(i); } vector <int>::iterator it ; it = v.begin(); while(it != v.end()) { cout << *it << ' '; ++it; } cout << endl; cout << "v.size = " << v.size() << endl;}void test_array() { vector <int> v(100); for(int i = 0; i < 20; i++) { v[i] = 2*i + 1; } for(int i = 0; i < 20; i++) { cout << v[i] << " "; } cout << endl;}void test_insert() { std::vector<int> myints; cout <<"0.size: " << myints.size() << endl; for (int i=0; i<10; i++) { myints.push_back(i); } cout << "1. size: " << myints.size() << '\n'; myints.insert (myints.end(),10,100); vector <int>::iterator it ; for(it = myints.begin(); it != myints.end(); ++it) { cout << *it << " "; ++it; } cout << endl; cout << "2. size: " << myints.size() << '\n'; myints.pop_back(); std::cout << "3. size: " << myints.size() << '\n';}void test_find() { vector <int> v; v.push_back(50); v.push_back(67); v.push_back(99); v.push_back(2991); v.push_back(23); v.push_back(44); v.push_back(23); v.push_back(32); v.push_back(9999); cout << "The contents of the vector are: " << endl; vector <int>::iterator it = v.begin(); while(it != v.end()) { cout << *it << " "; ++it; } cout << endl; ///find an element in the array using the 'find' algorithm... vector <int>::iterator point = find(v.begin(), v.end(), 2991 ); ///check if value was found if(point != v.end()) { int position = distance(v.begin(), point); cout << "value " << *point; cout << "found in the vector at position:" << position<< endl; }}int main (){ test_init(); test_push_back(); test_array(); test_insert(); test_find(); return 0;}///强烈推荐网址：http://www.cplusplus.com/reference/vector/vector/insert/