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#ifndef FWD_H
#define FWD_H

class INameA;
class INameB;
class CNameC;
class CNameD;

#endif

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import os

file = open('fwd.h', "r")

v = file.readlines()

file.close()

declarations = []

for line in v:
    # line = line.lower()
    # print line
    if line.find('class') > 0:
        line = line.lstrip(' ')
        line = line.split(' ')
        line = line[1].rstrip(';')
        line = line.replace('\n', ' ')
        line = line.replace(';', ' ')
        line = line.rstrip(' ')
        # print "LINE " + line
        declarations.append(line)

declarations.sort()
print declarations

definitions = []

for file in os.listdir('.'):
    w = file.rsplit('\n')
    # print w
    for line in w:
        if (line.startswith('I') or line.startswith('C')) and line.endswith('.h'):
            line = line.replace('.h', ' ')
            line = line.rstrip(' ')
            # print line
            definitions.append(line)

definitions.sort()
print definitions

differcence1 = []
for item in declarations:
    if not item in definitions:
        differcence1.append(item)
print differcence1

differcence2 = []
for item in definitions:
    if not item in declarations:
        differcence2.append(item)
print differcence2

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from __future__ import with_statement
import os

HEADER_SUFFIX = '.h'

with open('fwd.h') as lines:
    declarations = set(line.split(None, 1)[1]
                       for line in lines if 'class' in line)

definitions = set(name[:-len(HEADER_SUFFIX)]
                  for name in os.listdir('.')
                  if name[0] in 'IC' and name.endswith(HEADER_SUFFIX))

print sorted(declarations - definitions)
print sorted(definitions - declarations)