incr(n) Tcl Built-In Commands incr(n)

NAME
       incr - Increment the value of a variable

SYNOPSIS
       iinnccrr varName ?increment?



DESCRIPTION
       Increments the value stored in the variable whose name is varName.  The
       value of the variable must be an integer.   If  increment  is  supplied
       then  its  value  (which  must  be an integer) is added to the value of
       variable varName;  otherwise 1 is added to varName.  The new  value  is
       stored  as  a  decimal  string in variable varName and also returned as
       result.


SEE ALSO
       expr(n)


KKEEYYWWOORRDDSS
       add, increment, variable, value



Tcl                                                                    incr(n)