Cout from class method does nothing - c++

Question

I have a class "beaker" that represents a beaker with n-dices that have n-faces. It has a method "roll" which returns a vector with n-elements where each element represents a dice. Then I have another class "board" that for now, it only prints the values generated by beaker.roll using cout;
So I call the beaker.roll function to pass the result to print them, but it does nothing. I have no compile errors/IntelliSense warnings. What am I doing wrong?
#include <iostream>
#include <random>
#include <chrono>
#include <thread>
#include <vector>
using std::cout;
using std::vector;
class beaker {
public:
int diceCount, diceFaces;
beaker() {
diceCount = 2;
diceFaces = 6;
};
beaker(int count, int faces) {
diceCount = count;
diceFaces = faces;
};
//Dice values
vector<uint8_t> dice;
//METHODS
//RETURN DICE i VALUE
int diceValue(int d) {
return dice.at(d-1);
}
//ROLL DICE + RETURN RESULT
vector<uint8_t> roll() {
std::mt19937 mt(std::chrono::high_resolution_clock::now().time_since_epoch().count());
std::uniform_int_distribution<int> dist(1, diceFaces);
for (int i=0; i<diceCount; i++) {
dice.push_back(dist(mt));
}
return dice;
}
//RETURN LAST DICE NUMBERS
vector<uint8_t> result() {
return dice;
}
};
class board {
public:
void Print(vector<uint8_t> dice) {
for (int i=0; i<dice.size(); i++) {
cout << dice.at(i);
}
}
};
int main() {
beaker beaker;
board board;
board.Print(beaker.roll());
}

Answer 1

The problem is that the values in dice are of type uint8_t, which the cout::<< operator is interpreting as unsigned char, so it is printing out the values as ASCII characters. However, the values are between 1 and 6, and ASCII characters less than 32 are mostly non-printing characters, so they aren't visible in the output.
To convince the cout::<< operator to print the values as integers instead, update the code to this:
void Print(vector<uint8_t> dice) {
for (int i=0; i<dice.size(); i++) {
cout << static_cast<int>(dice.at(i));
}
cout << std::endl; // just to make sure the buffer gets flushed ASAP
}