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Text File  |  1990-03-26  |  346 b   |  17 lines
  1. %====================== upper_lower/2         ===============================
  2. Goal: upper_lower("HI THERE",LOWER)
  3. LOWER=hi there
  4. 1 Solution
  5. Goal: upper_lower(UPPER,"yes")
  6. UPPER=YES
  7. 1 Solution
  8. Goal: upper_lower("yES","YeS")
  9. True
  10. Goal: upper_lower(UPPER,'y')
  11. UPPER=Y
  12. 1 Solution
  13. Goal: upper_lower('Y',LOWER)
  14. LOWER=y
  15. 1 Solution
  16. Goal:
  17.