ANSI '85

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identification division.
program-id. TYPEWRITER.    *> keyboard - memory - screen
    *> structured code with scope-delimiters
    *> *** execute in Interactive mode ***

data division.
working-storage section.
1   TW-MEMORY.
 2   INP-LINE pic x(80) occurs 5.
77  I pic 9.
77  MEM pic 9.
 88  MEM-BEG value 0.
 88  MEM-END value 1.

procedure division.
    initialize TW-MEMORY
    set MEM-BEG to true
    display "write text max 5 times, at end write e:"  display " " 
    
    perform varying I from 1 by 1 until I > 5 or MEM-END
        accept INP-LINE(I)
        if INP-LINE(I) = "e" 
            set MEM-END to true
        end-if  end-perform
    display "   entry is complete"  display " "
    
    perform varying I from 1 by 1 until INP-LINE(I) = "e" or I > 5
        display I ". " INP-LINE(I)
        end-perform
    display "   the work is finished ***"
    stop run. 

I = keyboard, W = memory, O = screen:

write text max 5 times, at end write e:
 
aaaaaaaa
bbbbbbbb
cccccccc
e
   entry is complete
 
1. aaaaaaaa                                                                        
2. bbbbbbbb                                                                        
3. cccccccc 
   the work is finished                                                                        

Čevela - 8.5.2020