如何在C++中按索引删除向量中没有标准库函数的字符串？

#include <iostream>
#include <vector>
#include <string>

void removeAtIndex(std::vector<std::string>& vec, size_t index) {
    if (index >= vec.size()) {
        std::cerr << "Index out of range" << std::endl;
        return;
    }

    // Move elements after the index to the left
    for (size_t i = index; i < vec.size() - 1; ++i) {
        vec[i] = vec[i + 1];
    }

    // Remove the last element
    vec.pop_back();
}

int main() {
    std::vector<std::string> vec = {"apple", "banana", "cherry", "date"};

    removeAtIndex(vec, 2); // Remove "cherry" at index 2

    for (const auto& str : vec) {
        std::cout << str << ' ';
    }

    return 0;
}