In C, how do we indicate - in an expression - that we which to use the integer code associated with a given character?

1.   ?    By preceding the character with a backslash.
2.   ?    By surrounding the character in single quotes.
3.   ?    By surrounding the character with double quotes.
4.   ?    By simply using the character - nothing else is needed.

What are "escape sequences"?

1.   ?    A means of exiting a function or program by other than the normal means - for instance, if a division by zero were detected, this would invoke and escape sequence.
2.   ?    Strings of ASCII characters that begin with ASCII code 27 (dec) - the ESC characters.
3.   ?    Sequences of characters that are interpreted by the display device as special commands.
4.   ?    Ways of indicating characters that either can't be typed directly or that might might be interpreted as something other than a character by the compiler.

How many so-called "alphabetic" escape sequences are there in the C Standard language?

1.   ?    5
2.   ?    6
3.   ?    7
4.   ?    8

Which of the following C expressions will set the value of k equal to the ASCII code of the backslash character?

1.   ?    k = '\';
2.   ?    k = '\/';
3.   ?    k='\\';
4.   ?    k=\;
   

What affect does the "new line" character have of the display device?

1.   ?    Erases the contents of the next line.
2.   ?    Locates the active position to the beginning of the next line.
   
3.   ?    Erases the contents of the present line and moves the active position to the beginning of the present line.
4.   ?    Scrolls the text on the display up one line.

A character constant formed by following a backslash with up to three octal digits is known as an "octal escape sequence". What code does such a sequence translate to?

1.   ?    The character that represents the first digit.
2.   ?    The integer represented by the sequence of octal digits.
3.   ?    The control code whose upper byte is the first digits and whose lower byte is given by the second two digits.
4.   ?    The corresponding upper case character.

If the value of k is an integer between 0 and 10, which statement below will print the correct character on the display device?

1.   ?    putc( k, stdout);
2.   ?    putc( 'k', stdout);
3.   ?    putc( 'k+10', stdout);
4.   ?    putc( k + '0', stdout);

Given that k is the ASCII code for a lower case character, which expression will evaluate to the ASCII code of the corresponding upper case character?

1.   ?    k - 'a' + 'A'
2.   ?    k - 'A' + 'a'
3.   ?    'A' - k +'a'
4.   ?    'a' - k + 'A'

Which of the following represents the correct way to check if a character (whose ASCII code is stored in k) is the letter Q or q?

1.   ?    if ( k == 'Q' || 'q' )
2.   ?    if ( ( k == 'Q' ) || ( k == 'q' ) )
3.   ?    if ( k == 'Q' && 'q' )
4.   ?    if ( ( k == 'Q' ) && ( k == 'q' ) )

You ask the user to provide a Y or N response and want to issue a message if they don't enter one of those two characters. Their response is stored in the variable ans. Which of the following statements will accomplish this?

1.   ?    if ( ans != 'Y' || 'N' )
   /* Output Message */
2.   ?    if ( ( ans != 'Y' ) || ( ans != 'N' ) )
   /* Output Message */
3.   ?    if ( ( ans != 'Y' ) && ( ans != 'N' ) )
   /* Output Message */
4.   ?    if ( ( ans == 'Y' ) && ( ans == 'N' ) )
   /* Output Message */