Podcast
Questions and Answers
Which function is NOT typically used for output in C programming?
Which function is NOT typically used for output in C programming?
- scanf() (correct)
- printf()
- putchar()
- puts()
The escape sequence '
' represents a single quotation mark.
The escape sequence ' ' represents a single quotation mark.
False (B)
What format specifier would you use in printf to display a float in exponential notation?
What format specifier would you use in printf to display a float in exponential notation?
%.2e
The function _______ reads a string from standard input until a newline character is encountered.
The function _______ reads a string from standard input until a newline character is encountered.
Match the following C functions with their usage:
Match the following C functions with their usage:
Study Notes
Output Functions in C
putchar()
: displays a single character to the console.puts()
: displays a string to the console, ending with a newline character.printf()
: the most versatile function, it formats and prints data to the console, utilizing format specifiers to control output.
Data Types and Format Specifiers in C
- decimal:
%d
for integer values. - integer:
%i
for integer values, similar to%d
. - float (decimal notation):
%f
for floating-point numbers. - float (exponential notation):
%e
or%E
for floating-point numbers using exponential notation. - char:
%c
for a single character. - long int:
%ld
for long integer values. - string:
%s
for a sequence of characters.
Input Functions in C
scanf()
: reads formatted input from the console, using format specifiers to define expected data types.getch()
: retrieves a character from the keyboard without echoing it to the screen (not buffered).getche()
: similar togetch()
, but echoes the character to the screen.getchar()
: reads a single character from the keyboard (buffered).gets()
: reads an entire line of characters from the console, including spaces.
Escape Sequences in C
- An escape sequence is a combination of characters that represents a specific special character or action.
- Alert:
\a
generates an audible alert (a beep). - Backspace:
\b
moves the cursor one position back. - Newline:
\n
moves the cursor to the beginning of the next line. - Carriage Return:
\r
moves the cursor to the beginning of the current line. - Tab:
\t
inserts a horizontal tab character. - Backslash:
\\
represents a backslash character. - Single Quotation Mark:
\'
represents a single quotation mark. - Double Quotation Mark:
\"
represents a double quotation mark. - Question Mark:
\?
represents a question mark.
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Description
Test your knowledge on input and output functions in C programming, including the use of various data types and format specifiers. This quiz covers essential functions like printf()
, scanf()
, and their applications in displaying and retrieving data.