I'm not sure why this code isn't working?

#include <iostream>
#include <string>
#include <vector>
#include <cstdlib>
#include <ctime>
#include <tuple>
void printBoard(std::vector<std::tuple<int,int>> x) {
    for (unsigned int i = 0; i < x.size(); i++) {
        int trying = std::get<0>(x[i]);
        int num = std::get<1>(x[i]);
        std::cout << "Case #" << trying << ", Val = $" << num << std::endl; 
    }
}
int main()
{
    std::cout << 5 << std::endl;
}

I tried running this code but I am getting these errors while trying to do so:

DealOrNoDeal.cpp:7:34: error: no member named 'tuple' in namespace 'std'
void printBoard(std::vector<std::tuple<int,int>> x) {
                            ~~~~~^
DealOrNoDeal.cpp:7:43: error: expected '(' for function-style cast or type construction
void printBoard(std::vector<std::tuple<int,int>> x) {
                                       ~~~^
DealOrNoDeal.cpp:7:51: error: expected '>'
void printBoard(std::vector<std::tuple<int,int>> x) {
                                                  ^
DealOrNoDeal.cpp:7:28: note: to match this '<'
void printBoard(std::vector<std::tuple<int,int>> x) {
                           ^
DealOrNoDeal.cpp:7:34: error: no member named 'tuple' in namespace 'std'
void printBoard(std::vector<std::tuple<int,int>> x) {
                            ~~~~~^
DealOrNoDeal.cpp:7:43: error: expected '(' for function-style cast or type construction
void printBoard(std::vector<std::tuple<int,int>> x) {
                                       ~~~^
DealOrNoDeal.cpp:7:51: error: expected '>'
void printBoard(std::vector<std::tuple<int,int>> x) {
                                                  ^
DealOrNoDeal.cpp:7:28: note: to match this '<'
void printBoard(std::vector<std::tuple<int,int>> x) {
                           ^
DealOrNoDeal.cpp:8:34: error: use of undeclared identifier 'x'
    for (unsigned int i = 0; i < x.size(); i++) {
                                 ^
DealOrNoDeal.cpp:9:34: error: use of undeclared identifier 'x'
        int trying = std::get<0>(x[i]);
                                 ^
DealOrNoDeal.cpp:10:31: error: use of undeclared identifier 'x'
        int num = std::get<1>(x[i]);

Which was really strange because I never had a problem with this code segment before... I am trying to build a deal or no deal game, but all it does is bringing multiple errors. Any ideas on how I can fix this?