\nwhat does it mean in c language

A pointer is a variable that stores the memory address of other variables. The * operator (dereference operator) is used to retrieve the value of the variable pointed to by the pointer, allowing the program to access and manipulate data indirectly through the pointer.

In C language, * is the pointer operator

What are pointers?

A pointer is a variable used to store the memory address of another variable. It enables programs to access and manipulate other memory locations.

* The role of the operator

• * The operator is used to get the value of the variable pointed to by the pointer.
• It is called the dereference operator because it retrieves the value from the memory location pointed to by the pointer.

Syntax

*pointer-variable

wherepointer-variable is the pointer Pointer to variable.

Example

<code class="c">int x = 10;
int *ptr = &x; // ptr 指向 x

cout << "x 的值：" << x << endl;
cout << "*ptr 的值：" << *ptr << endl; // 解引用 ptr 以获取 x 的值</code>

Output:

<code>x 的值：10
*ptr 的值：10</code>

It can be seen that the * operator is used to get the value pointed to the variable, This allows programs to access and manipulate data indirectly through pointers.

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