What is the purpose of the int function in the C language?

In the C language, the purpose of the int function is to define a data type for an integer variable or function return value. When declaring an integer variable, the int keyword is typically used, such as int num; which means a integer variable num is defined. Additionally, in function declarations and definitions, the int keyword can be used to specify the return value type as an integer, for example int add(int a, int b) { return a + b; } defines a function add that returns an integer value.