24628 - Dynamically compute product of all values in an array

Sample 24628: Dynamically compute product of all values in an array

/* Sample data set */

data a;
  input x1-x5;
datalines;
1 2 3 4 5
2 3 4 5 6
4 5 6 7 8
;

data b;
  set a;

  /* Create an array with variables X1 through X5 */
  array test(5) x1-x5;

  /* Each value of the array is multiplied by PROD, which is */  
  /* initially set to the first array element                */
  do i=1 to dim(test)-1;
    if i=1 then prod=test(i);
    prod=prod*test(i+1);
  end;
  drop i;
run;

proc print;
run;

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Obs    x1    x2    x3    x4    x5    prod

 1      1     2     3     4     5     120
 2      2     3     4     5     6     720
 3      4     5     6     7     8    6720

Type:	Sample
Topic:	SAS Reference ==> DATA Step Data Management ==> Manipulation and Transformation ==> Array processing

Date Modified:	2010-11-23 13:40:12
Date Created:	2004-09-30 14:08:59

Product Family	Product	Host	SAS Release
			Starting	Ending
SAS System	Base SAS	All	n/a	n/a

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Sample 24628: Dynamically compute product of all values in an array

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