UBOUND - mkilgore/QB64pe GitHub Wiki

The UBOUND function returns the largest valid index (upper bound) of an array dimension.

result% = UBOUND(arrayName[,])

• arrayName specifies the name of the array.
• dimension% specifies the dimension number, starting with 1 for the first dimension.
  • If omitted, dimension% is assumed to be 1.
  • If dimension% is less than 1 or is greater than the number of dimensions, a subscript out of range error occurs.
• UBOUND, along with LBOUND, is used to determine the range of valid indexes of an array.

PRINT UBOUND(myArray)
PRINT UBOUND(myOtherArray, 2)

 5
 4

• Arrays, LBOUND
• DIM, COMMON, STATIC, SHARED