What is a method in C, and how does C call a method

A method is a series of processes to solve a problem, which may be long or short.

It has the same meaning as a method function in other languages.

It's pretty much the same as a function.

public int sum(int x, int y)return x+y;

It's the method of calculating x+y.

call: int x=1;

int y=2;

int z=sum(x,y); //z=x+y

Calling in c should be used to represent the ratio of the circumference to the diameter of a circle, which is about , which is actually what we call pi

About the formula that is called to :

x of the positive metamorphosis. The return value is between to ;

cosine value of x. Returns a number between to ;

Angle and radian conversion formula:

Raans = Angle * pi 180

Angle = radian*180 pi

There is also a commonly used way to calculate radians: (the same).

The formula for calculating radians is: 2*pi 360*angle.

1. The c synchronous method is the traditional method call, the simplest method without parameters, void without return value. An example of a statement is as follows. Only the method name () is required for the call.

2. The method call with parameters is also as simple, and the parameters are written in parentheses after the method name, as shown in the figure. When calling, you only need to fill in the corresponding parameters in the meta brackets in turn. Note:

c There are a variety of keyword modifications and qualifiers, such as in, out, ref, etc.

3. For method declarations with default parameters, it should be noted that all default parameters should be placed at the end of the parameter list. When calling, read the parameters from front to back, and the missing items will automatically follow the default parameters.

<>4. There is also a method with a return value that is also commonly used. Methods with return values must use return of a specific type; to return. Methods with return values are sometimes called functions.

4. For the declaration of asynchronous methods, or methods that wait for other asynchronous methods internally, you need to add the keyword async. The return value changes: If the asynchronous method has no return value and cannot be waited, the return value uses the void type.

If an asynchronous method has no return value and can be waited, the return value uses the task type. If the asynchronous method has a return value, the return value must be of the task type "Return Value Type".

5. As follows, if an asynchronous method is called directly in the traditional way, this method will be executed in another thread (the default is a user-mode thread), and the original thread will continue to execute. But if you add the await keyword to wait for this asynchronous method, it is semantically very similar to the synchronous method.

If you call a method in the same class, just write the method name plus () directly, if you use it in other classes, you must first ensure that your method is public, i.e., public, and then if you define a method that is static, static, just use the class name where your method is located to point out that method, if it is not static, you first create an object of the class, and then use the object name to point out the method.

Instantiated and then clicked through the object.