Vector - reserve()

소스)

#include<vector>
#include<iostream>
 
void print(std::vector<int> Target_Vector)
{
    for (std::vector<int>::iterator IterPos = Target_Vector.begin(); IterPos != Target_Vector.end(); ++IterPos)
        std::cout << *IterPos << " ";
    std::cout << std::endl;
}
 
void main()
{
    std::vector<int> Vector = { 2,3,4,1,3,5,7};
 
    std::cout << Vector.capacity() << std::endl;
    Vector.reserve(100);
    std::cout << Vector.capacity() << std::endl;
    Vector.assign(101, 5);
    std::cout << Vector.capacity() << std::endl;
    Vector.assign(151, 5);
    std::cout << Vector.capacity() << std::endl;
    Vector.assign(201, 5);
    std::cout << Vector.capacity() << std::endl;
 
}

내용)

벡터가 꽉찼을 때 벡터가 늘어나는 사이즈를 지정합니다. 16 이하로 설정시에 16씩 늘어납니다.

결과)