C Comment conversion to C + + annotation Project

#define _CRT_SECURE_NO_WARNINGS 1

#include "CommentConvert.h"

StateType State;

void Donullstate (file *read, file *write)

{

int first = FGETC (read);

int second = 0;

Switch (first)

{

Case '/':

Second = fgetc (read);

if (second = = ' * ')

{

FPUTC (First, write);

FPUTC ('/', write);

state = C_state;

}

else if (second = = '/')

{

FPUTC (First, write);

FPUTC (second, write);

state = Cpp_state;

}

Else

{

FPUTC (First, write);

FPUTC (second, write);

}

Break

Case EOF:

FPUTC (First,write);

state = End_state;

Default

FPUTC (First, write);

Break

}

}

void Docstate (file *read, file *write)

{

int first = FGETC (read);

int second = 0;

Switch (first)

{

Case ' * ':

Second = fgetc (read);

if (second = = '/')//Discard */

{

int third = 0;

Third = fgetc (read);

if (third! = ' \ n ' &&third! = EOF)

{

Fseek (Read,-1, seek_cur);

FPUTC (' \ n ', write);

}

Else

{

FPUTC (' \ n ', write);

}

state = Null_state;

}

else if (second = = ' * ')

{

UNGETC (second, read);

FPUTC (First, write);

}

Else

{

FPUTC (First, write);

FPUTC (second, write);

}

Break

Case ' \ n ':

FPUTC (First, write);

FPUTC ('/', write);

FPUTC ('/', write);

Break

Case EOF:

FPUTC (First,write);

state = End_state;

Break

Default

FPUTC (First, write);

Break

}

}

void Docppstate (file *read, file *write)

{

int first = FGETC (read);

int second = 0;

Switch (first)

{

Case ' \ n ':

FPUTC (First, write);

state = Null_state;

Break

Case EOF:

state = End_state;

Break

Default

FPUTC (First, write);

Break

}

}

void Convertwork (file *read, file *write)

{

state = Null_state;

while (state = end_state)

{

Switch (state)

{

Case Null_state:

Donullstate (read, write);

Break

Case C_state:

Docstate (read, write);

Break

Case Cpp_state:

Docppstate (read, write);

Break

}

}

}

void Commentconvert ()

{

file* pwrite = NULL;

file* PRead = fopen (InputFileName, "R");

if (PRead = = NULL)

{

Perror ("Open file for read");

Exit (Exit_failure);

}

Pwrite = fopen (OutputFileName, "w");

if (Pwrite = = NULL)

{

Fclose (PRead);

Perror ("Open File for write");

Exit (Exit_failure);

}

Convertwork (Pread,pwrite); Conversion functions

Fclose (PRead);

Fclose (Pwrite);

}

Input.c

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Output.c

650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/7D/BA/wKioL1butRLTofNoAAAdltDJB0s227.png "style=" float: none; "Title=" 2 Output.png "alt=" Wkiol1butrltofnoaaadltdjb0s227.png "/>

The state machine is used to divide the problem into 3 states, that is, C state, C + + state, null state, when traversing to a certain \n,/*,//, to divide the situation between the three states to convert

C Comment conversion to C + + annotation Project