5.4) Decisions Within Decisions (cont'd)

I hope you can see now why it is so important to indent when you do if statements since it makes it clearer where each if statements start and end.

       program example12
       real :: a
       real :: b
       a=10.0
       b=5.0
       if ( a > b ) then
          print *, ‘a is greater than b’
          a=b
          if ( a > 3.0 ) then
             print *, 'a is greater than 3.0'
          endif
       else
          print *, ‘increase the value of a’
          a=40.0
          print *, ‘try a value of ‘, a
       endif
       end program example12

Example of a program with nested if statements. Nested means if statements inside of if statements. The nested if statement is on lines 9, 10, and 11.