c语言字符常量和字符串常量

Any character (a single character) that is enclosed within the single quotes (like, 'A') is called character constants in C programming language.

用单引号引起来的任何字符(单个字符)(例如'A' ) 在C编程语言中称为字符常量 。

Character constants contain:

字符常量包含：

• Any uppercase alphabet

  任何大写字母

• Any lowercase alphabet

  任何小写字母

• A space

  空间

• A digit

  一个数字

• Any special character

  任何特殊字符

字符常量声明 (Character constant declaration)

A character constant is declared by using const keyword.

使用const关键字声明字符常量 。

Syntax:

句法：

    const char constant_name = 'value';

Example:

例：

#include <stdio.h>
int main(void) 
{
const char1 = 'A';      //uppercase alphabet
const char2 = 'X';      //uppercase alphabet 
const char3 = 'a';      //lowercase alphabet
const char4 = 'x';      //lowercase alphabet
const char5 = '5';      //a digit
const char6 = '#';      //a special character 
const char7 = ' ';      //a space 
//print values
printf("char1 = %c\n", char1);
printf("char2 = %c\n", char2);
printf("char3 = %c\n", char3);
printf("char4 = %c\n", char4);
printf("char5 = %c\n", char5);
printf("char6 = %c\n", char5);
printf("char7 = %c\n", char7);
return 0;
}

Output

输出量

char1 = A
char2 = X
char3 = a
char4 = x
char5 = 5
char6 = 5
char7 =  

翻译自: https://www.includehelp.com/c/character-constant.aspx

c语言字符常量和字符串常量