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Master Modern C++

Solution: Dynamic Warehouse Inventory

Understand how to dynamically allocate and manage warehouse inventory data in C++ using heap memory. Explore safe memory practices such as using new[], delete[], and setting pointers to nullptr to prevent errors and ensure program stability.

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C++ 23
#include <iostream>
int main() {
    int size = 0;
    std::cin >> size;
    // Allocate memory on the heap for 'size' integers
    int* inventory = new int[size];
    // Read input into the dynamic array
    for (int i = 0; i < size; ++i) {
        std::cin >> inventory[i];
    }
    // Calculate total
    int totalItems = 0;
    for (int i = 0; i < size; ++i) {
        totalItems += inventory[i];
    }
    std::cout << "Total items in warehouse: " << totalItems << "\n";
    // Deallocate the memory block
    delete[] inventory;
    inventory = nullptr; // Good practice to nullify pointer after delete
    return 0;
}
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