What does new char mean in c++

The new char operator is used in C to dynamically allocate a character and returns a pointer to the newly allocated memory unit. The syntax is char* new_char = new char;. Uses include creating character variables, character arrays, and adding characters to strings. Dynamically allocated memory needs to be released manually, using the delete operator.

The meaning of new char in C

In C, new char operation Character is used to dynamically allocate a character. It returns a pointer to a newly allocated character memory location.

Syntax:

<code class="cpp">char* new_char = new char;</code>

Usage:

new char operator allows you to run the program Character memory is allocated. It can be used for the following purposes:

• Create a single character variable.
• Create a character array.
• Adds a character to a string.

Example:

Create a single character variable:

<code class="cpp">char* c = new char;
*c = 'a'; // 将字符 'a' 存储在变量中</code>

Create a character array:

<code class="cpp">char* arr = new char[10]; // 分配一个可以容纳 10 个字符的数组
arr[0] = 'H'; // 将字符 'H' 存储在数组的第一个元素中</code>

Character Add a character to the string:

<code class="cpp">string str = "Hello";
char* new_char = new char;
*new_char = '!'; // 创建一个新的字符并存储字符 '!'
str += *new_char; // 将新字符添加到字符串中
cout << str; // 输出 "Hello!"</code>

Note:

Dynamically allocated memory needs to be released manually after use. The memory pointed to by the character pointer can be released using the delete operator:

<code class="cpp">delete new_char;
delete[] arr;</code>

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