【C语言】C语言注释转换成C++注释。

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1.一般情况
/* 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
////

6.连续的/问题**
//*

7.C++注释问题
// /xxxxxxxxxxxx/

#define _CRT_SECURE_NO_WARNINGS#include <stdio.h>#include <stdlib.h>#include <assert.h>typedef enum TAG{    TAGBEGIN,    TAGEND,}TAG;typedef enum STATE{    SUCCESS,    NO_MATCH,}STATE;STATE Annotation_Convert(FILE *infile, FILE *outfile){    TAG tag = TAGEND;    assert(infile);    assert(outfile);    char firstCh, secondCh;    do    {        firstCh = fgetc(infile);        switch (firstCh)        {        case '/':            secondCh = fgetc(infile);            if (secondCh == '*' && tag == TAGEND)//处理一般情况以及匹配情况            {                fputc('/', outfile);                fputc('/', outfile);                tag = TAGBEGIN;            }            else            {                fputc(firstCh, outfile);                fputc(secondCh, outfile);                if (secondCh == '/')//处理C++注释情况：// /*abcdefgh*/                {                    char next;                    do                    {                        next = fgetc(infile);                        fputc(next,outfile);                    } while (next != '\n' && next != EOF);                }            }            break;        case '*':            secondCh = fgetc(infile);            if (secondCh == '/')            {                char next = fgetc(infile);                if (next != '\n' && next != EOF)//处理换行问题/*int i = 0;*/ in t j = 0;                {                               //以及连续注释/**//**/情况                    fputc('\n', outfile);                    fseek(infile, -1, SEEK_CUR);                }                tag = TAGEND;            }            else//处理连续**/情况：/********/            {                fputc(firstCh, outfile);                fseek(infile, -1, SEEK_CUR);            }            break;        case '\n':            fputc('\n', outfile);            if (tag == TAGBEGIN)//处理多行注释情况/*int i = 0;            {                           //          int j = 0;                fputc('/', outfile);    //        */int m = 0;                fputc('/', outfile);            }            break;        default:            fputc(firstCh, outfile);            break;        }    } while (firstCh != EOF);    if (tag == TAGEND)    {        return SUCCESS;    }    else    {        return NO_MATCH;    }}int main(){    STATE s;    FILE *infile = fopen("input3.c", "r");    FILE *outfile = fopen("output3.c", "w");    if (infile == NULL)    {        perror("error");        exit(EXIT_FAILURE);    }    if (outfile == NULL)    {        fclose(infile);        perror("error");        exit(EXIT_FAILURE);    }    s = Annotation_Convert(infile, outfile);    if (s == SUCCESS)    {        printf("匹配成功！\n");    }    if (s == NO_MATCH)    {        printf("不匹配！\n");    }    fclose(infile);    fclose(outfile);    return 0;}

input.c

output.c

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