What does strings stand for in c language

In C language, string is a null-terminated character array used to store character sequences. Features include: character array, variable length, null terminated. A string can be declared as a character array, initialized using a string constant, or by assignment. Individual characters can be accessed using the subscript operator and compared using the strcmp() function. String in C language is widely used because of its efficiency, scalability, and compatibility.

Strings in C language

In C language, string is a data type used for storage A string of characters. It is an array of characters, terminated by the null character ('\0').

Features:

• Character array: string is a character array, which ends with a null character ('\0').
• String length: The length of a string is determined by the number of characters before the first null character.
• Variable length: string is variable length and can dynamically allocate and release memory.
• Null-terminated: All strings must be null-terminated to indicate the end of the string.

Usage:

• Declaration: string is declared using the char keyword, followed by square brackets ([ ]) The length of the string enclosed in brackets. For example:

  <code class="c">char str[100];</code>

• Initialization: string can be initialized by assignment or using a string constant:

  <code class="c">char str[] = "Hello World"; // 字符串常量初始化
  str[0] = 'H'; // 赋值初始化</code>

• Access: You can use the subscript operator to access a single character in the string:

  <code class="c">char first_char = str[0];</code>

• Comparison: Strcmp() function can be used for comparison :

  <code class="c">if (strcmp(str1, str2) == 0) {
    printf("字符串相等\n");
  }</code>

Advantages:

• Efficiency: string is stored as a character array, so access and modification are Very efficient.
• Scalability: Using the malloc() and free() functions, string can dynamically allocate and release memory to adapt to different needs.
• Compatibility: String is a widely used data type in C language and is easily compatible with other languages ​​and programs.

The above is the detailed content of What does strings stand for in c language. For more information, please follow other related articles on the PHP Chinese website!