The difference between '' and ' ' in C language

In C language, "" and '' both represent string constants. The difference is: character length: "" can contain any length, and '' can only contain a single character. Escape characters: "" supported, '' not supported. Character set: "" supports Unicode, '' only supports ASCII.

The difference between "" and '' in C language

In C language, "" and '' Both are used to represent string constants, but there are the following differences between them:

1. Character length

"" can contain strings of any length, while ' ' can only contain single characters.

2. Escape characters

"" can contain escape characters (starting with a backslash), such as newline (\n), tab ( \t) and quotation marks (\"). And '' does not support escape characters.

3. Character set

"" supports the Unicode character set, while ' ' Only supports ASCII character set

Usage scenarios

According to the above differences, we can choose to use the appropriate string constant type:

• Single character: Use ''. For example: 'A', '5', '$'.
• ##Use "" for multi-character string. : "Hello, world!", "This is an example string.".
Contains escape characters:
• Use "". For example: "\nNew line\n", "\ tTab character\t".
Contains Unicode characters:
• Use "". For example: "\u03B1" (Greek lowercase alpha).

Note:

In C language, string constants must end with the null terminator ('\0')

.

The above is the detailed content of The difference between '' and ' ' in C language. For more information, please follow other related articles on the PHP Chinese website!