INCLAN: if: Difference between revisions
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'''if''' (''condition'') ''statement'' | '''if''' (''condition'') ''statement'' | ||
or | |||
'''if''' (''condition'') '''then'''<br> | '''if''' (''condition'') '''then'''<br> | ||
:''sequence of statements'' | |||
'''else if''' (''condition'') '''then'''<br> | |||
else if (''condition'') then<br> | :''sequence of statements'' | ||
'''else'''<br> | |||
:''sequence of statements'' | |||
else<br> | '''end if''' | ||
end if | |||
== Description == | == Description == | ||
| Line 19: | Line 18: | ||
statements. A logical "if" statement must not end with the word "then". | statements. A logical "if" statement must not end with the word "then". | ||
== Examples== | == Examples == | ||
i=–56 | i=–56 | ||
Latest revision as of 11:45, 17 August 2009
Synopsis
if (condition) statement
or
if (condition) then
- sequence of statements
else if (condition) then
- sequence of statements
else
- sequence of statements
end if
Description
The "if" statement allows for Fortran-77 style logical or block if statements. A logical "if" statement must not end with the word "then".
Examples
i=–56 if (i.lt.0) print "$i is negative." –56 is negative.
if (mod(i,2).eq.1) then print "$i is an odd number." else if (def(’x’) .and. exist(’y’)) then print "x is defined, and y exists." else if (s.eq.’ ’) then print "The variable s is blank." end if