2.2 Programming Techniques

The following is NOT true about variable names

• They should be descriptive
• They must be in capital letters
• They can’t start with numbers or contain spaces
• They point to memory locations

In an assignment operation,what appears on the right hand side

• Label for a variable that is destination of data
• Multiple variables that are destinations for data
• Source variables or operations
• The assignment operator

which of the following is not a valid constant

• SPACE
• PI
• UserName
• WORDLIMIT

Which of the following is a valid keyword for output?

• PRINT
• SHOW
• DISPLAY
• INPUT

Consider the following expression: a=b. This means

• a will always be equal to b
• b is being renamed into a
• The value of memory location a gets copied into memory location b
• The value of memory location b gets copied into memory location a

Which of the following is not a valid data type?

• Real
• String
• Character
• Fraction

Quotation marks around a variable’s identifier imply

• It is an integer
• It is a string
• It is a Boolean
• It is a real

The multiplication table is best displayed using this data type

• Boolean
• Character
• Integer
• Real

This variable type can only have True or False values

• Boolean
• Character
• Integer
• Real

Casting refers to:

• Boolean algebra
• Rounding of reals
• Converting between variable data types
• Printing out of the program’s results