What is the symbol for neutral in c++?

In C, the ampersand symbol & has the following uses: Passing variables by reference: allows direct modification of variable values ​​in a function. Address operator: Returns the memory address of a variable or expression. Bitwise AND operator: performs a logical AND operation on each bit of two integers. Logical AND operator: performs a bitwise AND operation on two Boolean values ​​and returns a true or false value.

c What is the symbol for neutralization?

In the C programming language, the ampersand symbol is &, used for the following purposes:

• Pass variables by reference : Pass a variable as a reference to a function or other block of code, allowing direct modification of it.
• Address operator: Returns the memory address of a variable or expression.
• Bitwise AND operator: Performs a bitwise AND operation on two integer operands.
• Logical AND Operator: Performs a logical AND operation on two Boolean operands.

Passing variables by reference

In the following example, the func() function accepts a reference parameter x:

<code class="cpp">void func(int &x) {
  x++; // 修改 x 的值
}

int main() {
  int x = 10;
  func(x);
  std::cout << x; // 输出 11，因为 x 的值已被修改
}</code>

Get address operator

& The operator can return the memory address of a variable or expression. In the following example, &x returns the address of variable x:

<code class="cpp">int x = 10;
int *ptr = &x;
std::cout << ptr; // 输出 x 的内存地址</code>

bitwise AND operator

The & operator can also perform a bitwise AND operation, performing a logical AND operation on each bit of the two integer operands. In the following example, x & y returns the result of the bitwise AND of two binary numbers:

<code class="cpp">int x = 10; // 二进制为 1010
int y = 7; // 二进制为 0111
int result = x & y; // 二进制为 0010，十进制为 2</code>

Logical AND Operator

## The #& operator can also perform a logical AND operation, combining two Boolean operands. In the following example, x & y returns the result of the bitwise AND of two Boolean values:

<code class="cpp">bool x = true;
bool y = false;
bool result = x & y; // false</code>

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