[注释转化]C语言注释转换为C++语言注释

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CommentCovnert.h

#ifndef __COMMENT_CONVERT_H__#define __COMMENT_CONVERT_H__#include <stdio.h>#include <stdlib.h>enum STATE{END_STATE,NUL_STATE,C_STATE,CPP_STATE};void DoNulState(FILE* pfin, FILE* pfout, enum STATE* s);void DoCState(FILE* pfin, FILE* pfout, enum STATE* s);void DoCppState(FILE* pfin, FILE* pfout, enum STATE* s);#endif //__COMMENT_CONVERT_H__

CommentConvert.c

#include "CommentConvert.h"void DoNulState(FILE* pfin, FILE* pfout, enum STATE* s){int first = 0;int second = 0;first = fgetc(pfin);switch (first){case '/':{second = fgetc(pfin);switch (second){case '/':fputc(first, pfout);fputc(second, pfout);*s = CPP_STATE;break;case '*':fputc(first, pfout);fputc('/', pfout);*s = C_STATE;break;default:fputc(first, pfout);fputc(second, pfout);break;}}break;case EOF:*s = END_STATE;break;default:fputc(first, pfout);*s = NUL_STATE;break;}}void DoCState(FILE* pfin, FILE* pfout, enum STATE* s){int first = 0;int second = 0;int third = 0;first = fgetc(pfin);switch (first){case '*':{second = fgetc(pfin);switch (second){case '/':{third = fgetc(pfin);if (third == '\n'){fputc(third, pfout);}else{ungetc(third, pfin);fputc('\n', pfout);}*s = NUL_STATE;}break;case '*':{ungetc(second, pfin);fputc(first, pfout);}break;default:{   fputc(first, pfout);   fputc(second, pfout);}break;}break;case EOF:*s = END_STATE;break;case '\n': fputc(first, pfout);fputc('/', pfout);fputc('/', pfout);break;default:fputc(first, pfout);}}}void DoCppState(FILE* pfin, FILE* pfout, enum STATE* s){int first = 0;int second = 0;first = fgetc(pfin);switch (first){case '\n':fputc(first, pfout);*s = NUL_STATE;break;case EOF:*s = END_STATE;break;default:fputc(first, pfout);break;}}

test.c

#define _CRT_SECURE_NO_WARNINGS 1#include "CommentConvert.h"//注释转化test(){enum STATE state = NUL_STATE;FILE* fin = NULL;FILE* fout = NULL;fin = fopen("input.c", "r");if (fin == NULL){perror("fopen input");exit(EXIT_FAILURE);}fout = fopen("output.c", "w");if (fout == NULL){perror("fopen output");exit(EXIT_FAILURE);}while (state != END_STATE){switch (state){case NUL_STATE:DoNulState(fin, fout, &state);break;case C_STATE:DoCState(fin, fout, &state);break;case CPP_STATE:DoCppState(fin, fout, &state);break;default:break;}}fclose(fin);fclose(fout);}int main(){test();system("pause:");return 0;}

input.c

// 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
/*a*//*b*/

// 6.连续的**/问题
/***/

// 7.C++注释问题
// /*xxxxxxxxxxxx*/

output.c

// 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
//a
//b

// 6.连续的**/问题
//*

// 7.C++注释问题
// /*xxxxxxxxxxxx*/

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