vector::push_back
Adds an element to the end of the vector.
void push_back(const T& Val);
void push_back(T&& Val);
Parameters
- Val
The value to assign to the element added to the end of the vector.
Example
// compile with: /EHsc /W4
#include <vector>
#include <iostream>
using namespace std;
template <typename T> void print_elem(const T& t) {
cout << "(" << t << ") ";
}
template <typename T> void print_collection(const T& t) {
cout << " " << t.size() << " elements: ";
for (const auto& p : t) {
print_elem(p);
}
cout << endl;
}
int main()
{
vector<int> v;
for (int i = 0; i < 10; ++i) {
v.push_back(10 + i);
}
cout << "vector data: " << endl;
print_collection(v);
// pop_back() until it's empty, printing the last element as we go
while (v.begin() != v.end()) {
cout << "v.back(): "; print_elem(v.back()); cout << endl;
v.pop_back();
}
}
Output
vector data: 10 elements: (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) v.back(): (19) v.back(): (18) v.back(): (17) v.back(): (16) v.back(): (15) v.back(): (14) v.back(): (13) v.back(): (12) v.back(): (11) v.back(): (10)
Requirements
Header: <vector>
Namespace: std