max_size() vs capacity in vector help confusion

Question

i think max_size() give max number of element any vector can store & it will be constant for any vector. and capacity max number of element that depend upon numbeer of input or push_back operation.IN below code if i replace 100 by max_size()->4611686018427387903 then why it can't able to store the value since it has max_size(),and what is the use of max_size() if it is wrong
// comparing size, capacity and max_size
#include <iostream>
#include <vector>

int main ()
{
std::vector<int> myvector;

// set some content in the vector:
for (int i=0; i<100; i++) myvector.push_back(i);

std::cout << "size: " << myvector.size() << "\n";
std::cout << "capacity: " << myvector.capacity() << "\n";
std::cout << "max_size: " << myvector.max_size() << "\n";
return 0;
}

Answer 1

Sincerally i think that its can be useful only on limited and reatricted system. Else i dont see any useful use with it (this is my opinion but someone can find a more useful use)

Answer 2

max_size say you the POTENTIAL maximum that your vector can POSSIBLY store (depends on some factors which vector implementation) BUT this dont mean that you can reach this limit.

Answer 3

thank u for helping me

Answer 4

👍👍👍

Answer 5

so is there any use of it?or on my system it cant store