?//?1.一般情況
/*?int?i?=?0;?*/

//?2.換行問(wèn)題
/*?int?i?=?0;?*/int m =?0;
/*?int?i?=?0;?*/
int?j?=?0;

//?3.匹配問(wèn)題
/*int?i?=?0;/*xxxxx*/

//?4.多行注釋問(wèn)題
/*
int?i=0; ?
int?j?=?0;
int?k?=?0;
*/int?k?=?0;

//?5.連續(xù)注釋問(wèn)題
/**//**/

//?6.連續(xù)的**/問(wèn)題
/***/

//?7.C++注釋問(wèn)題
//?/*xxxxxxxxxxxx*/

#define _CRT_SECURE_NO_WARNINGS 1

#include<iostream>

#include<assert.h>

using namespace std;

typedef enum STATE

{

C_BEGIN, ? ? ?//在c注釋段內(nèi)

C_END, ? ? ? //注釋結(jié)束

C_NO_MATCH, //注釋不匹配

C_SUCCESS ?//注釋轉(zhuǎn)換成功

}STATE;

int flag = 0;//解決C++注釋問(wèn)題 ?當(dāng) flag == 1 時(shí)表示出現(xiàn)C++問(wèn)題

STATE AnnotationCovert(FILE* fIn, FILE* fOut)

{

assert(fIn);

assert(fOut);

char first, second;

STATE ?sta= C_END;

do

{

first = fgetc(fIn);

switch (first)

{

case '/':// /*xxxxxxxxxxxx*/

{

second = fgetc(fIn);

if (second == '*'&& sta == C_END)//>>>>>解決一般問(wèn)題

{

fputc('/',fOut);

fputc('/', fOut);

sta = C_BEGIN;

}

else if (second == '/')//解決C++注釋問(wèn)題

{

fputc('/', fOut);

fputc('/', fOut);

sta = C_BEGIN;

flag = 1;

}

else//>>>>>>>>解決匹配問(wèn)題

{

fputc(first, fOut);

fputc(second, fOut);

}

break;

case '*':

{

second = fgetc(fIn);

if (second == '/' && sta == C_BEGIN && flag == 0)

{

fputc('\n',fOut);//>>>>>解決換行問(wèn)題

sta = C_END;

}

else if (second == '/' && sta == C_BEGIN && flag == 1)//解決C++注釋問(wèn)題

{

fputc(first, fOut);

fputc(second, fOut);

sta = C_END;

flag = 0;

}

else

{

fputc(first, fOut);

fseek(fIn, -1, SEEK_CUR);//>>>>>>解決連續(xù)的**/問(wèn)題

}

break;

}

case '\n': ? ? //>>>>>>>>>>>>>解決多行注釋問(wèn)題

{

?fputc(first, fOut);

?if (sta == C_BEGIN)

?{

?fputc('/', fOut);

?fputc('/', fOut);

?}

?break;

}

default:

{

?? fputc(first, fOut);

?? break;

}

? ? ? ? }

}

} while (first != EOF);

if (sta == C_END)

{

return C_SUCCESS;

}

else

{

return C_NO_MATCH;

}

}

void TestConvert()

{

FILE* fIn = fopen("input.c", "r");

if (fIn == NULL)

{

printf("file open fail. ? errno:%d\n", errno);

return;

}

FILE* fOut = fopen("output.c", "w");

if (fOut == NULL)

{

fclose(fIn);

printf("file open fail. ? errno:%d\n", errno);

return;

}

STATE ret = AnnotationCovert(fIn, fOut);

if (ret == C_SUCCESS)

{

cout << "注釋轉(zhuǎn)換成功！" << endl;

}

else if (ret == C_NO_MATCH)

{

cout << "注釋轉(zhuǎn)換失敗！" << endl;

}

else

{

cout << "未知錯(cuò)誤！請(qǐng)仔細(xì)核查！" << endl;

}

}

int main()

{

TestConvert();

system("pause");

return 0;

}

原注釋：

轉(zhuǎn)換后的注釋：

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轉(zhuǎn)載于:https://blog.51cto.com/10704527/1719496

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