INCLAN: if: Difference between revisions
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== Synopsis == | |||
'''if''' (''condition'') ''statement'' | |||
'''if''' (''condition'') '''then'''<br> | |||
.<br> | |||
.<br> | |||
else if (''condition'') then<br> | |||
.<br> | |||
.<br> | |||
else<br> | |||
.<br> | |||
.<br> | |||
end if | |||
== Description == | |||
The "if" statement allows for Fortran-77 style logical or block if | The "if" statement allows for Fortran-77 style logical or block if | ||
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== | |||
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 | |||
Revision as of 17:26, 13 August 2009
Synopsis
if (condition) statement
if (condition) then
.
.
else if (condition) then
.
.
else
.
.
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