Compilation error: data.h

[prince-ao]

This is probably a problem with my system. Starting from 05_Statements I'm getting the error:

data.h:10:9: error: unknown type name ‘FILE’
   10 | extern_ FILE *Infile;                   // Input and output files
      |         ^~~~
data.h:11:9: error: unknown type name ‘FILE’
   11 | extern_ FILE *Outfile;
      |         ^~~~
data.h:13:19: error: ‘TEXTLEN’ undeclared here (not in a function)
   13 | extern_ char Text[TEXTLEN + 1];         // Last identifier scanned
      |                   ^~~~~~~
data.h:14:30: error: ‘NSYMBOLS’ undeclared here (not in a function)
   14 | extern_ struct symtable Gsym[NSYMBOLS]; // Global symbol table

Can anyone point me to the right direction. Thank you.

[prince-ao]

I found the error. Your not supposed to compile headers. 🤦