Understanding Variable Scopes
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Let's put the analogy with the library discussed in the last chapter into practice:
- Write down the content of the library book in your home notebook.
- Read the content of the library book using your home notebook.
Oplossing
solution.cpp
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#include <iostream>
// Function that simulates reading the book in the library
std::string readLibraryBook() {
// Here we have a book with its content
std::string book = "Hello, user!";
return book;
}
int main()
{
// We have no access to the book because it remains in the library
// But we remember the content of the book and can write it somewhere
// Find notebook at home to write down the content
std::string notebook;
// Write down the content to your home notebook
notebook = readLibraryBook();
// Now we have the content of the book in our notebook and can use it
std::cout << "Library book content: " << notebook << std::endl;
}
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Sectie 1. Hoofdstuk 5
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#include <iostream>
// Function that simulates reading the book in the library
std::string readLibraryBook() {
// Here we have a book with its content
std::string book = "Hello, user!";
return book;
}
int main()
{
// We have no access to the book because it remains in the library
// But we remember the content of the book and can write it somewhere
// Find notebook at home to write down the content
string notebook;
// Write down the content to your home notebook
notebook = ___;
// Now we have the content of the book in our notebook and can use it
std::cout << "Library book content: " << ___ << std::endl;
}
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