对于C++，在python中是否有与" in“关键字等效的关键字

# 列表
my_list = [1, 2, 3, 4, 5]
if 3 in my_list:
    print("3 is in the list")

# 字符串
my_string = "Hello, World!"
if "Hello" in my_string:
    print("Hello is in the string")

# 字典
my_dict = {"key1": 1, "key2": 2, "key3": 3}
if "key1" in my_dict:
    print("key1 is in the dictionary")

#include <iostream>
#include <vector>
#include <algorithm>

int main() {
    std::vector<int> my_vector {1, 2, 3, 4, 5};
    int target = 3;

    if (std::find(my_vector.begin(), my_vector.end(), target) != my_vector.end()) {
        std::cout << target << " is in the vector" << std::endl;
    }

    return 0;
}

#include <iostream>
#include <vector>

int main() {
    std::vector<int> my_vector {1, 2, 3, 4, 5};
    int target = 3;
    bool found = false;

    for (int i : my_vector) {
        if (i == target) {
            found = true;
            break;
        }
    }

    if (found) {
        std::cout << target << " is in the vector" << std::endl;
    }

    return 0;
}