结构新手，我对如何从 void 函数中返回值并将其放入另一个函数感到困惑

我的C++班刚刚开始学习开发结构。我被困在一个家庭作业问题上，要求我编写一个程序，该程序使用名为movie_data的结构和两个movie_data变量来显示有关电影的信息。我能够正确开发movie_data结构以及两个变量，以输出名为 get_movie_info 的函数。但是，由于我将其设置为 void 函数，因此无法返回get_movie_function生成的任何内容以发送到我的movie_display函数。我尝试将我的函数重写为movie_data结构数据类型，但这似乎使事情变得更糟。第一个函数正确生成所有信息，但第二个函数不输出任何内容。谢谢你的时间。

#include <iostream>
#include <iomanip>
using namespace std;

struct movie_data
{
string title;
string director;
int year_released;
int running_time;
};
//Function Prototype
void get_movie_info(movie_data movie1, movie_data movie2);
void movie_display(movie_data movie1, movie_data movie2);
int main()
{
movie_data movie1;
movie_data movie2;
get_movie_info(movie1, movie2);
movie_display(movie1, movie2);
return 0;
}
void get_movie_info(movie_data movie1, movie_data movie2)
{
//Get movie_data's title
cout << "Enter the title for the first movie: ";
//cin.ignore();
getline(cin, movie1.title);
cout << movie1.title << endl;
//Get movie_data's director
cout << "Enter the director's name for " << movie1.title << ": ";
//cin.ignore();
getline(cin, movie1.director);
cout << movie1.director << endl;
//Get movie_data's release year
cout << "Enter the release year for " << movie1.title << ": ";
cin >> movie1.year_released;
cout << movie1.year_released << endl;
//Get movie_data's running time
cout << "Enter the runtime of " << movie1.title << " in minutes: ";
cin >> movie1.running_time;
cout << movie1.running_time << " minutes" << endl;
//Get movie_data's title
cout << "Enter the title for the second movie: ";
cin.ignore();
getline(cin, movie2.title);
cout << movie2.title << endl;
//Get movie_data's director
cout << "Enter the director's name for " << movie2.title << ": ";
//cin.ignore();
getline(cin, movie2.director);
cout << movie2.director << endl;
//Get movie_data's release year
cout << "Enter the release year for " << movie2.title << ": ";
cin >> movie2.year_released;
cout << movie2.year_released << endl;
//Get movie_data's running time
cout << "Enter the runtime of " << movie2.title << " in minutes: ";
cin >> movie2.running_time;
cout << movie2.running_time << " minutes" << endl;
}
void movie_display(movie_data movie1, movie_data movie2)
{
//Display movie1 information
cout << "nBelow is the data of the first movie:n";
cout << "Movie Title:  " << movie1.title << endl;
cout << "Director's Name:  " << movie1.director << endl;
cout << "Release Year:  " << movie1.year_released << endl;
cout << "Movie Runtime in minutes:  " << movie1.running_time << endl;
//Display the movie information
cout << "nBelow is the data of the second movie:n";
cout << "Movie Title:  " << movie2.title << endl;
cout << "Director's Name:  " << movie2.director << endl;
cout << "Release Year:  " << movie2.year_released << endl;
cout << "Movie Runtime in minutes:  " << movie2.running_time << endl;

}