The difference between s and c in c language

The difference between string constant (s) and character constant (c) is: 1. s uses double quotes to represent a string, while c uses single quotes to represent a single character; 2. s is stored in read-only memory , and c is stored in read-write memory; 3. s can be compared, but c can only be compared with other c.

The difference between s and c in C language

In C language, s and c represents string constants and character constants respectively.

Character constant (c)

• Enclosed in single quotes (')
• represents a single character
• For example : 'a' represents the character 'a'

String constant (s)

• Enclosed in double quotes (")
• Represents a set of characters
• For example: "Hello world" represents the string "Hello world"

Other differences

• Length: String constants have variable length, determined by the number of characters they contain.
• Storage: Strings. Constants are stored in a read-only memory area, while character constants are stored in a readable and writable memory area.
• Operation: Character constants can be used as integers (ASCII codes), and strings. Constants cannot.
• Comparison: String constants can be compared, while character constants can only be compared with other character constants.

##Example

<code class="c">int main() {
    char c = 'a'; // 字符常量，表示字符 'a'
    char str[] = "Hello world"; // 字符串常量，表示字符串 "Hello world"

    printf("字符常量：%c\n", c);
    printf("字符串常量：%s\n", str);

    return 0;
}</code>

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