%Include: If you run a program containing the %INCLUDE statement, the SAS System executes any statements or data lines that you bring into the program. Statements are executed immediately. 

Syntax: 

Here,

• Source(s) specify the location of the information that you wish to access with the %INCLUDE statement.
• SOURCE2 causes the SAS log to show the source statements being used in your SAS program.
• S2=length specifies the length of the input record.
• Option-list specifies options that can be included in %INCLUDE.

%Eval: Integer arithmetic is used to evaluate arithmetic or logical expressions. %EVAL accepts only INTEGERS as operands in arithmetic expressions. Operands with floating-point values cannot be used in %EVAL arithmetic calculations. %SYSEVALF can be used in these cases.  

Syntax: %EVAL(arithmetic/logical-expression)

Example: 

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