为什么不是("Maya"=="Maya")在C++中是真的？

#include <iostream>
#include <cstring>

int main() {
    const char* str1 = "Maya";
    const char* str2 = "Maya";

    if (strcmp(str1, str2) == 0) {
        std::cout << "字符串相等" << std::endl;
    } else {
        std::cout << "字符串不相等" << std::endl;
    }

    return 0;
}

#include <iostream>
#include <string>

int main() {
    std::string str1 = "Maya";
    std::string str2 = "Maya";

    if (str1.compare(str2) == 0) {
        std::cout << "字符串相等" << std::endl;
    } else {
        std::cout << "字符串不相等" << std::endl;
    }

    return 0;
}