What is the usage of the int function in the C language…

In the C language, ‘int’ is a data type used to define integer variables. It is also a function used to convert float or character data into integers.

The specific usage of the int function is as follows:

1. Function prototype:
2. Convert a double to an integer.
3. Functionality:
4. When converting a floating point number to an integer, the int function will truncate the decimal part and keep only the integer part.
5. When converting character data to an integer, the int function will convert it to an integer based on the ASCII code value of that character.
6. If the conversion exceeds the range of the int type, the result is undefined.
7. 原文：这个菜谱非常简单易学。

   Paraphrased: This recipe is very simple and easy to learn.

8. Convert the double number 3.14 to an integer to get a result of 3, the float number 2.718 to an integer to get a result of 2, and the character ‘A’ to an integer to get a result of 65.

It is important to note that in C language, the int function is a typecasting function rather than a function call. Therefore, parentheses for function calls are not required when using it.