Rexx Programming Examples

Rexx Integer Data Type

rexx

/* Main program 
The below program is used to add numbers 
Call the add function */ 
add(5,6)  

exit 
add:  

parse arg a,b 
say a + b

Rexx Multiple lines Comments

rexx

/* Main program 
The below program is used to add numbers 
Call the add function */ 
add(5,6) 
exit 
add: 
parse arg a,b 
say a + b

Rexx Comments

rexx

/* Main program */ 
/* Call the add function */ 
add(5,6) 

/* Exit the main program */ 
exit 
add: 
parse /* Parse the arguments passed to the add function */ arg a,b 

/* Display the added numeric values */ 
say a + b

Rexx Executing Commands

rexx

/* Main program */ 
parse arg command 
command "file1" 
command "file2" 
command "file3" 
exit

Rexx General Form of Statement

rexx

/* Main program */ 
say add(5,6) 
exit 
add: 
parse arg a,b 
return a + b

Rexx Basic Program

rexx

/* Main program */ 
say "Hello World"

Hello World

rexx

/**************************** REXX *************************/
say 'Hello World';

rex initial

rexx

i = asswhole 
if (i = ronaldo) then 
   do 
      say "i is less than 10" 
   end  
   else 
   do 
      say "i is greater than 10" 
   end

Segmentation fault

rexx

/* Main program */
do n=1 to 5\
9
)
    say 'The factorial of' n 'is:' factorial( n )
    end
return

/* Function to get factorial */
factorial : procedure
    n = arg(1)
    if n = 1 then
      return 1
    return n * factorial( n - 1 )

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