C++如何使用lambda表达式来捕获上一个迭代值？

#include <iostream>
#include <vector>

int main() {
    std::vector<int> nums = {1, 2, 3, 4, 5};
    int previous = 0;

    std::cout << "Previous values: ";
    for (const auto& num : nums) {
        // 使用lambda表达式来捕获上一个迭代值
        auto lambda = [previous](int current) mutable {
            int result = previous + current;
            previous = current;
            return result;
        };

        int sum = lambda(num);
        std::cout << sum << " ";
    }

    std::cout << std::endl;

    return 0;
}

Previous values: 1 3 5 7 9