On most statements, the appearance of arithmetic expressions results in evaluations of those expressions when a CLIST executes the statements. However, on the WRITE statement, you must explicitly instruct a CLIST to evaluate an arithmetic expression by using the &EVAL built-in function. For example, to create a WRITE statement that adds two variables, &FNUM and &SNUM, and displays the results, code the following:

WRITE &FNUM + &SNUM = &EVAL(&FNUM+&SNUM)

Assuming &FNUM is four and &SNUM is three, the CLIST displays the following message:

4 + 3 = 7