System Function LC

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⎕LC - Line Counter

⎕LC is an ISO 13751 standard niladic system function which returns an array of the current line numbers of every current function. Consider the following workspace:

∇ test
[1] 'LC=' ⎕LC


∇ test2
[1] 'Calling Test'
[2] test

So the following commands would produce the following output:

     test
LC= 1

     test2
Calling Test
LC= 1 2

⎕LC is a niladic function, you cannot assign a value to it.

System Variables (A value may be assigned to these except for ⎕DM)
ALX CT DM DT ELX FC FEATURE FPC IC IO
LR LX PP PR PW RL SA WSID
Niladic System Functions (a value cannot be assigned to these)
A AV EM ET LC NNAMES NNUMS SI SYSID SYSVER
T TC TCBEL TCBS TCESC TCFF TCHT TCLF TCNL TCNUL
TS WA
Monadic or dyadic system functions (a value cannot be assigned to these)
AT CR DC DFT DL DR EA EC ERROR ES
EX FMT FX MF NAPPEND NC NCREATE NERASE NINFO NL
NLOCK NREAD NRENAME NREPLACE NRESIZE NSIZE NTIE NUNTIE STOP TF
TRACE UCS VR
Note that quad functions and variables (except for the ⎕A family of functions) are case insensitive