Complete SAS Programming Guide - Learn SAS and Become a Data Ninja - Macro Variable Assignment Rules

The video tutorial explains the rules for assigning values to macro variables in SAS. It covers various examples, including handling special characters, blanks, empty values, zero values, and mathematical expressions. The tutorial also demonstrates how to combine values from different macro variables.

Why is it important to understand macro variable assignment rules in SAS?

• To ensure compatibility with other programming languages

• To improve the speed of SAS programs

• To avoid syntax errors in SAS code

• To create effective and efficient macro variables

What happens to leading and trailing blanks when a macro variable is assigned with apostrophes?

• Only the apostrophes are removed

• They are retained along with the apostrophes

• They are removed, but the apostrophes remain

• Both the blanks and apostrophes are removed

How does SAS handle quotation marks in macro variable assignments?

• Quotation marks are replaced with spaces

• Quotation marks are retained

• Quotation marks are converted to apostrophes

• Quotation marks are removed

What is the result of a macro variable assignment involving a mathematical expression like '4 + 3'?

• The expression is stored as '7'

• The expression is evaluated to 7

• The expression is stored as '4 + 3'

• The expression is ignored

When a macro variable is defined as 'Total one = &total + &sum', what is the resulting value if &total is 0 and &sum is '4 + 3'?

• 0 + 4 + 3

• 7

• 0 + 7

• 4 + 3