1) Which statement is not the rule for forming valid identifiers? a) Identifiers can consist of capital letters A-Z or a-z, the digits 0 to 9, the underscore character ( _ ) and the dollar ($) sign. b) The first character must be a letter or an underscore ( _ ) or the dollar ($) sign. Cannot start with any digit. c) No embedded blanks (space) within the identifier. d) Identifiers are case-sensitive. For example, mark and Mark are two different valid identifiers. e) Reserved words cannot be used as identifiers. f) The first character of an identifier can be a digit. 2) Select the reason why the character given is an invalid identifier: 1Malaysia a) Reserved word b) Contain special characters c) Start with digit d) Contain embedded space 3) Select the reason why the character given is an invalid identifier: return a) Reserved word b) Contain special characters c) Start with digit d) Contain embedded space 4) Select the reason why the character given is an invalid identifier: Sale Price a) Reserved word b) Contain special characters c) Start with digit d) Contain embedded space 5) Select the reason why the character given is an invalid identifier: Final-Mark a) Reserved word b) Contain special characters c) Start with digit d) Contain embedded space 6) Select the reason why the character given is an invalid identifier: num 1 a) Reserved word b) Contain special characters c) Start with digit d) Contain embedded space 7) Identify the most suitable data type to store the name entered by a user. a) String b) double c) int d) char e) float 8) Identify the most suitable data type to store the sale price of an item where the sale price is 70% of the original price. a) String b) double c) int d) char 9) Identify the most suitable data type to store the age and the number of siblings of a student. a) String b) double c) int d) char 10) Identify the most suitable data type to store the gender of a student (M) for male and (F) for female. a) String b) double c) int d) char

Exercise#13 Identifier, Variable, Constant, Reserved words & Data types

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