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Swap (Posted on 2004-01-02) Difficulty: 2 of 5
In programming, a common task is to swap the values of two variables. Lines 40-60 of the program below perform the swap using a temporary variable (T).

10 A=123
20 B=456
30 PRINT A,B
40 T=A
50 A=B
60 B=T
70 PRINT A,B

Rewrite the program to swap the values in A and B without using a temporary variable.

Note: The new program will not require sophisticated programming or complex math.

See The Solution Submitted by Brian Smith    
Rating: 3.2857 (7 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Sophisticated programming or Mathbrianjn2004-01-08 01:26:40
re: solutionFederico Kereki2004-01-05 11:07:48
Solution?Stereo2004-01-05 00:43:04
solution...sunny2004-01-04 18:29:43
QuestionNo Math?Richard2004-01-02 21:51:47
re(2): other solutionsRichard2004-01-02 21:47:58
re: other solutionsTristan2004-01-02 20:25:50
Solutionother solutionsCharlie2004-01-02 17:03:48
re: solutionGamer2004-01-02 16:10:22
Nice!stan2004-01-02 16:04:54
Solutionsolutionrerun1412004-01-02 14:48:46
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