Initializing std::array of arrays using uniform initialization in C++
To demonstrate this, let’s consider an example where we have a std::array of two arrays, each containing four integers. We can initialize this std::array as follows:
#include <iostream>
#include <array>
int main() {
std::array<std::array<int, 4>, 2> nestedArray = { { {1, 2, 3, 4}, {5, 6, 7, 8} } };
// Accessing elements of the array
std::cout << nestedArray[0][2] << std::endl; // Output: 3
std::cout << nestedArray[1][1] << std::endl; // Output: 6
return 0;
}
In the above code, we first include the necessary headers <iostream> and <array>. Then, we declare a std::array of size 2 of arrays of size 4. We use the uniform initialization syntax to initialize nestedArray with two nested arrays.
To access individual elements, we can use the index operator [] with the appropriate indices. In this example, we print the values at index [0][2] and [1][1] using std::cout.
By using uniform initialization, we can easily and concisely initialize nested std::array structures, improving code readability and maintainability.
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