Create a two-dimensional array at runtime: Difference between revisions

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  doit n m = a!(0,0) where a = array ((0,0),(n,m)) [((0,0),42)]
+=={{header|IDL}}==
+The following is only for demonstration. No real program should
+just assume that the user input is valid, integer, large enough etc.
+ read, x, prompt='Enter x size:'
+ read, y, prompt='Enter y size:'
+ d = fltarr(x,y)
+ d[3,4] = 5.6
+ print,d[3,4]
+ ;==> outputs  5.6
+ delvar, d
 =={{header|J}}==
@@ Line 135: / Line 149: @@
  'init set' =. 1r2;2r3           NB. fractions
  'init set' =. a: ; <<'Rosetta'  NB. boxes
-=={{header|IDL}}==
-The following is only for demonstration. No real program should
-just assume that the user input is valid, integer, large enough etc.
- read, x, prompt='Enter x size:'
- read, y, prompt='Enter y size:'
- d = fltarr(x,y)
- d[3,4] = 5.6
- print,d[3,4]
- ;==> outputs  5.6
- delvar, d
 =={{header|Java}}==