[Error] no matching function for call to 'Teacher::Teacher(std::string&, std::string&)'

这个错误提示是因为在创建 Teacher 对象时，没有提供一个匹配的构造函数。

可以检查一下 Teacher 类是否有一个以 `std::string` 为参数的构造函数。如果没有，则需要添加一个类似于以下代码的构造函数：

Teacher(std::string name, std::string subject) {
    // 构造函数代码
}

在创建 Teacher 对象时，需要传入两个字符串类型的参数，例如：

Teacher t("张三", "数学");

如果已经有一个构造函数，那么需要检查传入参数的类型是否与构造函数的参数类型匹配。

相关问题

报错no matching function for call to std::bind

这个错误通常是因为您使用了错误的参数类型或数量来调用std::bind()函数。std::bind()函数的参数应该是一个可调用对象和一些参数，用于绑定该可调用对象的参数。如果您的参数不匹配，编译器将无法找到匹配的函数，并报告“no matching function for call to std::bind”错误。

要解决这个问题，您应该检查您的std::bind()函数调用，并确保它们使用正确的参数类型和数量。如果您仍然无法解决问题，请考虑使用其他函数或方法来实现您的需求。

no matching function for call to widget：：connect

This error message typically occurs in Qt when you try to connect a signal to a slot, but the arguments of the signal and the slot do not match. To fix it, you need to make sure that the arguments of the signal and the slot are compatible.

For example, if you have a signal that takes an integer parameter and a slot that takes a string parameter, you will get this error message. To fix it, you either need to change the signal to take a string parameter or change the slot to take an integer parameter.

Here's an example of how to connect a signal to a slot with compatible arguments:

QObject::connect(sender, &Sender::valueChanged, receiver, &Receiver::updateValue);

In this example, the signal "valueChanged" takes an integer parameter and the slot "updateValue" also takes an integer parameter, so they are compatible. If your code is still giving you the "no matching function for call to widget::connect" error message, double-check the arguments of the signal and the slot to make sure they match.