Inventory Summary

A vector of small records can be summarized with a helper function and a range loop.

inventory_summary.cpp

#include <iostream>
#include <vector>

struct Item {
    int count;
    int price;
};

int totalValue(const std::vector<Item>& items) {
    int total = 0;
    for (const Item& item : items) {
        total += item.count * item.price;
    }
    return total;
}

int main() {
    int extraCount = ;

    std::vector<Item> items{{3, 10}, {extraCount, 8}};
    int value = totalValue(items);
    bool stocked = value >= 40;

    std::cout << "extraCount=" << extraCount << std::endl;
    std::cout << "value=" << value << std::endl;
    std::cout << "stocked=" << stocked << std::endl;
    return 0;
}

#include <iostream>
#include <vector>

struct Item {
    int count;
    int price;
};

int totalValue(const std::vector<Item>& items) {
    int total = 0;
    for (const Item& item : items) {
        total += item.count * item.price;
    }
    return total;
}

int main() {
    int extraCount = ;

    std::vector<Item> items{{3, 10}, {extraCount, 8}};
    int value = totalValue(items);
    bool stocked = value >= 40;

    std::cout << "extraCount=" << extraCount << std::endl;
    std::cout << "value=" << value << std::endl;
    std::cout << "stocked=" << stocked << std::endl;
    return 0;
}

#include <iostream>
#include <vector>

struct Item {
    int count;
    int price;
};

int totalValue(const std::vector<Item>& items) {
    int total = 0;
    for (const Item& item : items) {
        total += item.count * item.price;
    }
    return total;
}

int main() {
    int extraCount = ;

    std::vector<Item> items{{3, 10}, {extraCount, 8}};
    int value = totalValue(items);
    bool stocked = value >= 40;

    std::cout << "extraCount=" << extraCount << std::endl;
    std::cout << "value=" << value << std::endl;
    std::cout << "stocked=" << stocked << std::endl;
    return 0;
}

records A struct makes each inventory row clear: one count and one price.

summary The helper loops over records and returns a single value for the workflow.