C++ error: -> operator applied to non-pointer type, how to solve it?

C is a programming language widely used in the fields of computer science and engineering. Its powerful functions and easy-to-understand syntax make it the first choice for many programmers. However, when developing C programs Programmers often encounter various error messages. Among them, a common error message is the -> operator applied to non-pointer types.

First, let’s take a look at the arrow operator in C ->. It is usually used to access a member variable or member function pointed by a pointer to an object. For example, assuming there is a pointer ptr pointing to an object named myObject, we use the arrow operator to access the member variable a of obj, You can use the following syntax: ptr->a.

When we use the arrow operator on a non-pointer type, the compiler will prompt "-> operator applied to non-pointer types" error message. This usually occurs when we try to access member variables or member functions of an object.

So, how to solve this problem?

First, we need to check whether There are objects of non-pointer types being incorrectly used with the arrow operator. If this is the case, we need to modify the code to ensure that we only use the arrow operator on pointers to objects.

Secondly, we need Check that the type of the object we declare and the way we use the arrow operator are correct. Sometimes, we may confuse pointer and non-pointer type objects, resulting in the incorrect use of the arrow operator.

Finally, we need Check syntax errors carefully. Sometimes, a small syntax error can cause the code to not compile or run properly, leading to errors with the -> operator applied to non-pointer types. Therefore, while writing code, we should check syntax carefully , to make sure there are no typos or other common syntax errors.

In summary, when we encounter the "-> operator applied to non-pointer type" error in C, we need to check that we Whether there is an object of non-pointer type in the code that is incorrectly using the arrow operator, check whether the type of the object we declare and the way of using the arrow operator are correct, and carefully check for syntax errors. Through these methods, we can solve this problem , so that our C program can be successfully compiled and run.

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