C注释转换至CPP注释



convernt.h 如下：

#ifndef __CONVERNT_CTOCPP_H__
#define __CONVERNT_CTOCPP_H__

#include<stdio.h>

enum {
 NULLSTATUS,CSTATUS,CPPSTATUS,EOFSTATUS

};

void convernctocpp();
void convernt_ctocpp(FILE *ifp, FILE *ofp);
void do_null_status(FILE *ifp, FILE *ofp);
void do_c_status(FILE *ifp, FILE *ofp);
void do_cpp_status(FILE *ifp, FILE *ofp);

#endif

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convernt.c

代码如下：

#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>

#include"convernt.h"

int status = NULLSTATUS;

void do_null_status(FILE *ifp, FILE *ofp){
 int c = fgetc(ifp);
 switch (c)
 {
 case '/':{
     int d = fgetc(ifp);
     switch (d)
     {
     case'*':
      fputc('/', ofp);
      fputc('/', ofp);
      status = CSTATUS;
      break;
     case '/': fputc('/',ofp);
            fputc('/',ofp);
         status = CPPSTATUS;
         break;
     case EOF:
       status = EOFSTATUS;
       break;
     default:
      fputc(c, ofp);
     ungetc(d, ifp);
     status = NULLSTATUS;
      break;
     }
 }break;
 case EOF:status = EOFSTATUS;
  break;
 default:
  fputc(c, ofp);
  status = NULLSTATUS;
  break;
 }
}

void do_c_status(FILE *ifp, FILE *ofp){
 int c = fgetc(ifp);
 switch (c)
 {
 case '*':
 {
    int d = fgetc(ifp);
    switch (d)
    {
    case '/':
     fputc('\n', ofp);
     status = NULLSTATUS;
     break;
    default:
     fputc(c, ofp);
     ungetc(d, ifp);
     status = CSTATUS;
     break;
    }
    break;
 }
 case '\n':
  fputc(c, ofp);
  fputc('/', ofp);
  fputc('/', ofp);
  status = CSTATUS;
  break;

 case EOF:
  status = EOFSTATUS;
  break;

 default:
  fputc(c, ofp);
  status = CSTATUS;
  break;
 }

}
void do_cpp_status(FILE *ifp, FILE *ofp){
 int c = fgetc(ifp);
 if (c != '\n'){
   
  fputc(c,ofp);
  status = CPPSTATUS;
 }
 else
 {
  fputc(c,ofp);
  status = NULLSTATUS;
 }
 
}
static void convent_work(FILE *ifp, FILE *ofp){
 while (status != EOFSTATUS){

  switch (status)
  {

  case NULLSTATUS: do_null_status(ifp, ofp);
   break;
  case CSTATUS: do_c_status(ifp, ofp);
   break;
  case CPPSTATUS: do_cpp_status(ifp, ofp);
   break;
  case EOFSTATUS:
   break;
  default:
   break;
  }
 }

}

void convernctocpp(){
 FILE *ifp = fopen("input.txt", "r");
 FILE *ofp = fopen("output.txt","w");
 if (ifp == NULL || ofp == NULL){

  printf("Error \n");
  return;
 }
    convent_work(ifp, ofp);

 fclose(ifp);
 fclose(ofp);

}

-------------------------------------------------------------------------

测试程序

main.c

#include<windows.h>
#include<stdio.h>

#include"convernt.h"

int main(){

 convernctocpp();
 system("pause");
 return 0;
}

运行结果