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  1. IDENTIFICATION DIVISION.
  2. PROGRAM-ID. SAMPLE.
  3.  
  4. ENVIRONMENT DIVISION.
  5.  
  6. DATA DIVISION.
  7. WORKING-STORAGE SECTION.
  8. 77 n PIC Z9 .
  9.  
  10. PROCEDURE DIVISION.
  11. ACCEPT n
  12. PERFORM UNTIL n = 42
  13. compute r = 2**n
  14. display n
  15. ACCEPT n
  16. END-PERFORM.
  17. STOP RUN.
  18.  
Compilation error #stdin compilation error #stdout 0s 0KB
stdin
10
43
5
42
1
compilation info
prog.cbl:    13: error: Invalid argument expecting variable, on or before 'r'
prog.cbl:    14: error: undefined variable R, on or before 'display'
stdout
Standard output is empty