如何将 std::setw() 与数组输出一起使用？

Question

I am making a blackjack game in C++, and I am trying to print out the players and dealers cards in addition to their sums, capital and so on. However I'm running into an issue with std::setw() when printing out the vector of cards. Here is a code snippet:

    int width = 18;
    std::cout << std::left << std::setw(width) << "Your cards:";
    std::cout << std::left << std::setw(width * 2) << "arr";
    std::cout << std::left << std::setw(width) << "Dealers cards:";
    std::cout << "arr2" << std::endl;

    std::cout << std::left << std::setw(width) << "Your sum:";
    std::cout << std::left << std::setw(width*2) << player.sum();
    std::cout << std::left << std::setw(width) << "Dealers sum:";
    std::cout << dealer.sum() << std::endl;

Where arr and arr2 is there should be number values like 5 2 6 1 , but if I print each element separately the with alignment will break. I think for setw() to work it needs to be one block or string, or else the vertical alignment will mess up once the values change. I tried myString.push_back() for each vector value and then printing that, with no luck. I assume I need to find a way to print the string into one element.

This is what it should look like:

Your cards:     5 7 1 2                 Dealers cards:     2 1 7 5
Your sum:       21                      Dealers sum:       21
Your capital:   100                     Dealers capital:   100

Answer 1

I have found a solution. You can use stringstream to add int values to a string with no errors in conversion, this is how I fixed my code:

#include <sstream>
std::stringstream playerCards{};

for (int i{}; i < player.cards.size(); i++) {
    playerCards << player.cards[i] << " ";
}

int width = 18;
std::cout << std::left << std::setw(width) << "Your cards:";
std::cout << std::left << std::setw(width * 2) << playerCards.str();

This way the array will get put into a string and will count as one block, which is what I was looking for.