Question

Considering the following enum in C++, what will be the value of Sunday?
enum days (Sunday, Monday=5, Tuesday, Wednesday=7}​

Answer 1

Answer:

The value of Sunday can be 4

Answer 2

Enum or enumeration is a data type consisting of named values like elements, members, etc., that represent integral constants.

• It  contains fixed set of named integral constants.
• Their main use is in declaration of flags.
• The syntax to declare enumerations is as follows:
• enum <name> { named_constant1, named_constant2,...};
• e.g.  enum directions ( NORTH, SOUTH, EAST and WEST);
• Here direction is the name of the enum and NORTH, SOUTH, EAST and WEST are its named values.
• The default value of NORTH is 0, SOUTH is 1, EAST is 2 and WEST = 3. i.e. values are assigned in incremental order starting with 0.
• One can assign values to enum. for e.g. enum season {  summer=5, monsoon=2, winter=9 };
• Here summer has value 5, monsoon has value 2 and winter the value 9.
• One can use a combination of unset and set values. for e.g. enum directions { NORTH=5, SOUTH, EAST and WEST=2};
• This sets NORTH to 5, since SOUTH has no set value its value is set to value of NORTH+1 = 5+1= 6, so EAST is set to 7 and WEST to 2.
• The current question enum days (Sunday, Monday=5, Tuesday, Wednesday=7}​;
• Sunday has no set value, so it is given default value of 0, Monday will be set to 5, Tuesday will have value Monday+1 = 5+1 = 6 and Wednesday has value 7.

• The value of Sunday is 0.

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