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# getvarorder

Purpose
Get the internal order number of a decision variable.
Synopsis
`int getvarorder(XPRMcontext ctx,XPRMmpvar var);`
Arguments

ctx | Mosel's execution context
var | A reference to a decision variable or NULL

Return value
Internal order number or the maximum number of variables if var is NULL.
Further information
1. At its creation a variable is assigned an order number. This order number never changes and it is used as the sorting criterion when generating the matrix.
2. If the argument var is NULL, the returned value corresponds to the number of variables created so far.
Related topics
reordercols, isvarbefore
Parent Topic Matrix related functions

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