c语言注释转换成c++注释

最新推荐文章于 2022-01-18 17:48:19 发布

原创最新推荐文章于 2022-01-18 17:48:19 发布 · 250 阅读

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CC 4.0 BY-SA版权

本文介绍了一个用于处理C语言源代码中注释的转换器。该转换器能够识别并处理不同类型的注释，包括单行注释和多行注释，并将其转换为统一格式。文章提供了转换器的具体实现代码，可用于理解和学习C语言注释处理的基本方法。

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C语言注释情况：
 int a = 10;
// 1.一般情况
int num = 0;
/* int i = 0; */

// 2.换行问题
/* int i = 0; */int j = 0;
/* int i = 0; */
int j = 0;

// 3.匹配问题
/*int i = 0;/*xxxxx*/

// 4.多行注释问题
/*
int i=0;
int j = 0;
int k = 0;
*/int k = 0;

// 5.连续注释问题
/*int a=0;*//*int b=0;*/

// 6.连续的**/问题
/***/

// 7.C++注释问题
// /*xxxxxxxxxxxx*/

???????????CommentConvert.h



#ifndf__COMMENT_CONVERT_H__
#define__COMMENT_CONVERT_H__
typedef enum CONVERT_STATE
{
  NULL_STATE,
  C_STATE,
  CPP_STATE,
  END_STATE,
}State;
void CommentCovert();
void DoCovert();
void DoNullState(FILE*read,FILE*write);
void DoCState(FILE*read,FILE*write);
void DoCppState(FILE*read,FILE*write);
#endif//__COMMENTCONVERT_H__



??????????CommentConvert.c

void CommentCovert()
{
  FILE*Pread=fopen(input.c,"r");
  if(Pread==NULL)
   {
     perror(file open for read);
     exit(EXIT_FAILURE);
   }
  FILE*Pwrite=fopen(input.c,"write")
   {
     fclose(Pread);
     perror(file open for write);
     exit(EXIT_FAILURE);
   }
  DoConvert(Pread,Pwrite);
  fclose(Pread);
  fclose(Pwrite);
}
void DoConvert(FILE*read,FILE*write,State* state)
{
  state=NULL_START;
  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;
     default:
       break;
   }
 }
}
void DoNullState(FILE*read,FILE*write,State* state)
{
  int first=fgetc(read);
  int second=0;
  switch(first)
   {
     case'/':
       second=fgetc(read);
       if(second=='/')
         {
           fputc(first,write);
           fputc(second,write);
           state=CPP_STATE;
         }
       elseif(second=='*')
         {
           fputc(first,write);
           fputc(second,write);
           state=C_STATE
         }
       else
         {
           fputc(first,write);
           fputc(second,write);
         }
       break;
     case EOF:
       fputc(first,write);
       state=END_STATE;
       break;
     default:
       fputc(first,write);
       break;
   }
}
void DoCState(FILE*read,FILE*write,State* state)
{
   int first=fgetc(read);
   int second=0;
   switch(first)
    {
      case '*':
       second=fgetc(read);
       if(second=='/')
         {
           state=NULL_STATE;
           int third=fgetc(read);
           if(third=='\n')
             {
               fputc(third,write);
             }
           else
             { 
               fputc('\n',write);
               ungetc(third,read);
             }
           }
       else
         {
             fputc(first,write);
             ungetc(second,read);
             
         }
       break;
      case EOF:
       putc(first,write);
       state=END_STATE;
       break;
      case '\n':
       fputc(first,write);
       fputc('/',write);
       fputc('/',write);
       break;
      default:
       fputc(first,write);
       break;
   }
}
void DoCppState(FILE*read,FILE*write)
{
  int first=fgetc(read);
  switch(first)
   {
    case'\n':
     fputc('\n',write); 
     state=NULL_STATE;
     break;
    case EOF:
     fputc(first,write);
     state=END_STATE;
     break;
    default
     fputc(first,write);
     break;
   }
}





?????????????  test.c
int test()
{
  void CommentCovert();
}
int main()
{
 test();
 system("pause");
 return 0;
}