转换注释，从文件里哦

来源：互联网发布：桑拿软件编辑：程序博客网时间：2024/06/06 02:16

在一个文件里有一段代码，将里面的 /* */ 注释全部转换为 // 注释，初学者可能听起来很牛很难（我现在是初学者，我是这样认为的），只要理解了问题的意思，就会发现，诶，有点意思

话不多说，直接代码走起

convert_comment.h

#ifndef _CONVERT_COMMENT_H_#define _CONVER_COMMENT_H_#define INPUTFILE "input.c"#define OUTPUTFILE "output.c"enum{CSTATUS,CPPSTATUS,NULLSTATUS,EOFSTATUS};void connver_main();#endif

main.c

#define _CRT_SECURE_NO_WARNINGS 1#include<stdio.h>#include"convert_comment.h"int main(){connver_main();system("pause");}

convert_comment.c

#define _CRT_SECURE_NO_WARNINGS 1#include<stdio.h>#include"convert_comment.h"int status = NULLSTATUS;void do_null_status(FILE* ifp,FILE *ofp){int c = fgetc(ifp);switch(c){case '/':{int s = fgetc(ifp);switch(s){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(s,ifp);//不知道啥东西，退回去status = NULLSTATUS;break;}}break;case EOF:status = EOFSTATUS;break;default:fputc(c,ofp);status = NULLSTATUS;break;}}void do_cpp_status(FILE* ifp,FILE *ofp)// is //{int c = fgetc(ifp);switch(c){case '\n':fputc('\n',ofp);break;case '/':status = CPPSTATUS;break;case '*':fputc('/',ofp);fputc('/',ofp);break;case EOF:status = EOFSTATUS;break;default:fputc(c,ofp);status = NULLSTATUS;break;}}void do_c_status(FILE* ifp,FILE *ofp)// is **{int c = fgetc(ifp);switch(c){case '*':{int s = fgetc(ifp);switch(s){case '/':fputc('\n',ofp);status = NULLSTATUS;break;default:fputc(c,ofp);ungetc(s,ifp);status = CSTATUS;break;}}break;case EOF:status = EOFSTATUS;break;case '\n':fputc('\n',ofp);fputc('/',ofp);fputc('/',ofp);status = CSTATUS;break;default:fputc(c,ofp);status = CSTATUS;break;}}static void convert_work(FILE * ifp,FILE * ofp){while(status != EOFSTATUS){switch( status){case NULLSTATUS:do_null_status(ifp,ofp);break;case CPPSTATUS:do_cpp_status(ifp,ofp);break;case CSTATUS:do_c_status(ifp,ofp);break;case EOFSTATUS:break;default:break;}}}void connver_main(){FILE *ifp = fopen(INPUTFILE,"r");FILE * ofp = fopen(OUTPUTFILE,"w");if(ifp == NULL||ofp == NULL){fprintf(stderr,"this is fopen error\n");return ;}convert_work(ifp,ofp);fclose(ifp);fclose(ofp);}

不要忘了要把 input.c output.c文件建立在和你main.c comment.c .h文件一样的位置哦！

如果有不对的地方，可以评论告诉我，望指导！

阅读全文

0 0