String Constant
ۥAۥ - Character constant - ۥAۥ
"A" - String Constant - ۥAۥ and ۥ \0ۥ (NULL)
The string constant "A" consists of character A and \0. However, a single character string constant does not have an equivalent integer value. It occupies two
bytes, one for the ASCII code of A and another for the NULL character with a value 0, which is used to terminate all strings.
Valid String Constants: - "W" "100" "24, Kaja Street"
Invalid String Constants: - "W the closing double quotes missing
Raja" the beginning double quotes missing
Rules for Constructing String constants
1) A string constant may consist of any combination of digits, letters, escaped sequences and spaces enclosed in double quotes.
2) Every string constant ends up with a NULL character which is automatically assigned (before the closing double quotation mark) by the compiler.
Difference between single character constant and string constant
Character Constant String Constant
A character constant is enclosed within single inverted commas. A sequence of characters enclosed in double quotes
The maximum length of a character constant can be one character. A string constant can be any length.
A single character string constant has an equivalent integer value. A single character string constant does not have an equivalent integer value.
The character constant ‘A’ consists of only character A. The string constant "A" consists of character A and \0.
A single character constant occupies one byte. A single string constant occupies two bytes
Every character constant does not end up with a NULL character. Every string constant ends up with a NULL character which is automatically
assigned (before the closing double quotation mark) by the compiler
Questions
- A character string, a string constant consists of a sequence of characters enclosed in double quotes.
- A string constant may consist of any combination of digits, letters, escaped sequences and spaces. Note that a character constant ۥAۥ
ۥAۥ - Character constant - ۥAۥ
"A" - String Constant - ۥAۥ and ۥ \0ۥ (NULL)
The string constant "A" consists of character A and \0. However, a single character string constant does not have an equivalent integer value. It occupies two
bytes, one for the ASCII code of A and another for the NULL character with a value 0, which is used to terminate all strings.
Valid String Constants: - "W" "100" "24, Kaja Street"
Invalid String Constants: - "W the closing double quotes missing
Raja" the beginning double quotes missing
Rules for Constructing String constants
1) A string constant may consist of any combination of digits, letters, escaped sequences and spaces enclosed in double quotes.
2) Every string constant ends up with a NULL character which is automatically assigned (before the closing double quotation mark) by the compiler.
Difference between single character constant and string constant
Character Constant String Constant
A character constant is enclosed within single inverted commas. A sequence of characters enclosed in double quotes
The maximum length of a character constant can be one character. A string constant can be any length.
A single character string constant has an equivalent integer value. A single character string constant does not have an equivalent integer value.
The character constant ‘A’ consists of only character A. The string constant "A" consists of character A and \0.
A single character constant occupies one byte. A single string constant occupies two bytes
Every character constant does not end up with a NULL character. Every string constant ends up with a NULL character which is automatically
assigned (before the closing double quotation mark) by the compiler
Questions
- Define String Constant? Give example.
- State the rules for constructing string constants
