Can someone explain why this only prints out Hello World1, and then hangs for 1 sec before coming back to the command prompt, without printing anything else?

#include <iostream>
#include <cstddef>

using namespace std;
int main()
{
    char    tchar[4];
    cout << "Hello World1n";
    strcpy_s(tchar, sizeof(tchar), "Dick");
    cout << "Hello World2n";
    cout << tchar << "n";
    cout << "Hello World3n";
}