Question

which of the following statements are correct?
1.A string is a collection of characters terminated by '\0'.
2.The format specifier %s is used to print a string.
3.The length of the string can be obtained by strlen().
4. The pointer CANNOT work on string.
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Answer 1

Answer:

the statement number four is the correct one

Answer 2

The statements which are true are as follows:

(1) A string is a collection of characters terminated by '\0'.

(2) The format specifier '%s' is used to print a string.

(3) The length of the string can be obtained by 'strlen()'.

∴ Statements (1), (2) and (3) are correct.

Explanation:

• String is the set of characters that ends with a null character '\0'.
• The string in C language is one-dimensional array of character which is terminated by null character.
• Strings are always enclosed within double quotes
• The '%s' format specifier is implemented by representing strings.
• It is used in the printf() function for printing a string stored in the character array variable.
• strlen function is built-in string function in C programming, it is useful to find the string of the length.
• Syntax of the strlen function is: C strlen function will count the number of characters in a string until it reaches the null value (0) and returns that integer value as output.

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