Podcast
Questions and Answers
What is necessary for a string in C to denote its end?
What is necessary for a string in C to denote its end?
- A special character '#'
- A null character '\0' (correct)
- A space character ' '
- A semicolon ';'
Which of the following correctly represents a string in C?
Which of the following correctly represents a string in C?
- char name[ ] = "PROGRAM"; (correct)
- char name[ ] = "WORLD"; (correct)
- char name[ ] = {'H', 'E', 'L', 'L', 'O', ' '};
- char name[ ] = {'C', 'O', 'D', 'E'};
What will be the output of printf using the format specification %s for the string char name[] = "HELLO"?
What will be the output of printf using the format specification %s for the string char name[] = "HELLO"?
- HELLO (correct)
- H
- Hello
- HELLO
Which function would you use to read a string from standard input in C?
Which function would you use to read a string from standard input in C?
When declaring a string using an array, which of the following is an example of a correct declaration?
When declaring a string using an array, which of the following is an example of a correct declaration?
What are Strings?
What are Strings?
Which character is used to terminate a string?
Which character is used to terminate a string?
The string 'HAESLER' requires a null character in its declaration.
The string 'HAESLER' requires a null character in its declaration.
The format specification for printing a string in printf() is % ______
The format specification for printing a string in printf() is % ______
What is the output of the provided program example?
What is the output of the provided program example?
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Study Notes
What is a String?
- A string is a group of characters that can be stored in a character array
- Some programming languages treat strings as character arrays internally
- The array of characters are stored in successive memory locations
- A string ends with a null character (\0)
- The null character (\0) is not always required in the declaration of a string.
Example
- The example code demonstrates how to store "Klinsman" as a string in a character array called "name[]"
- The code loops through the string and prints each character until the null terminator ("\0") is reached
- When the "while" loop reaches the null character, it exits the loop
- The code is designed to print each character in the string "Klinsman", demonstrating a basic usage of character arrays to store strings.
What are Strings?
- Strings are a group of characters stored in a character array.
- Many programming languages treat strings as character arrays internally.
- Characters in a string are arranged sequentially in memory.
- A string always ends with a null character ('\0').
Example
- The example code demonstrates how to store a string in a character array and iterate through it using a while loop.
- The program iterates through the string character by character until it reaches the null terminator ('\0').
- The %s format specifier in printf() is used to print a string.
- The program illustrates how to calculate the length of the string.
- The provided example program can be rewritten to achieve the same output without explicitly using the length of the string.
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