What does disp mean in c language

disp is the keyword for pointer to function in C language. Syntax: type (variable_name)(argument_list); where type is the pointer type, variable_name is the pointer variable, argument_list is the function parameter type and name list. Example: int (ptr_to_func)(int, int); ptr_to_func = add; (*ptr_to_func)(10, 20);

disp in C Meaning in the language

disp is a keyword in C language, used to define pointers to functions.

Use the disp keyword

The disp keyword is used to declare a function address. The syntax is as follows:

<code class="c">type (*variable_name)(argument_list);</code>

Among them:

• type is the type of the pointer to the function.
• variable_name is the name of the pointer variable to the function.
• argument_list is a list of types and names of function parameters.

disp Keyword Example

The following example demonstrates the use of the disp keyword:

<code class="c">// 声明一个指向 int 型函数的指针
int (*ptr_to_func)(int, int);

// 将 ptr_to_func 指向 add 函数
ptr_to_func = add;

// 调用 add 函数通过 ptr_to_func 指针
int result = (*ptr_to_func)(10, 20);</code>

In this example, ptr_to_func is a pointer to the add function. add The function type is int (*add)(int, int), which accepts two int parameters and returns an int value. ptr_to_func can be called like an ordinary function, and the pointed function is accessed through the dereference operator *.

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