Comment Conversion?? --c++ comments to standard C language annotations

Write the annotation conversion program to implement the conversion function of annotations in a C + + language program source file
1.c++ style comments//notes converted to standard C-style */*/comments
2./* * * Style comments remain the same
3. All conversions are subject to grammatical rules
4. Annotation transformations need to support comment nesting
Note Conversion requirements:
There are a lot of nesting cases for annotations, and here's just an example, you need to follow the code of the C + + language annotation rules, and I won't just test the example here.
1, single-line comments or no nesting, comment lines directly converted, such as:
①//123/* 123 */
②/* 123 // 123 */unchanged
③/*123
* * Remain as is
2. There are nested annotations (there are also nested other annotation symbols in one comment//,/* */) The excess of each comment symbol in the nesting is replaced with two spaces.
such as single line:
①//123/456 //123 456/
②//123//456/123 456/
③//123*//456/*123 456/
such as cross-line
/...........
......... ..........
........ ..........
/ /
Attention:
1, in addition to the following two cases of modification, the source file after conversion can not have any other changes:
① extra annotations with spaces instead of
②//at the beginning of the note with/* and the end of the line */
2, the following 3 situations do not need to convert
①/* 123 // 456 */
②/* 123 // 456
*/
③/* 123
// 456
*/
3. You do not need to consider comments in the input file that do not conform to the grammar rules
Here is the main function

#include <iostream>using namespace STD;extern intCommentconvert (file *inputfile, file *outputfile);intMain () {FILE *fpin = NULL;//inputfileFILE *fpout = NULL;//outputfileFpin = fopen ("/users/caolu/desktop/program/own authoring/annotation/input.c","R");if(NULL = = Fpin) {cout<<"Open input file fail!"<<endl;return-1; } fpout = fopen ("/users/caolu/desktop/program/own authoring/annotation/output.c","W");if(NULL = = fpout) {cout<<"Open output file fail!"<<endl;return-1; } commentconvert (Fpin,fpout);//Fclose (Fpin); Fclose (fpout);return 0;}

Implementation of State functions

#include <iostream>usingnamespace Std;#Define UL unsigned longextern intCommentconvert (file *inputfile, file *outputfile); typedefenum{no_comment_state, c_comment_state, Cpp_comment_state, Str_state, end_state} State_enum;typedefstruct{FILE *inputfile;    FILE *outputfile; State_enum Ulstate;} State_machine;//State_machine g_state = {0};/////////////////////////// /// /// /// /// /// /// /// ///voidEventpro (CharCH);voidEventproatno (CharCH);voidEVENTPROATC (CharCH);voidEventproatcpp (CharCH);voidEVENTPROATSTR (CharCH);/////////////////////////// /// /// /// /// /// /// /// ////intCommentconvert (file *inputfile, file *outputfile) {if(Inputfile==null | | outputfile==null) {cout<<"input argument invalid!"<<endl;return-1;    } g_state.inputfile = Inputfile;    G_state.outputfile = outputfile; G_state.ulstate = no_comment_state;CharCh while(g_state.ulstate! = end_state) {ch = fgetc (g_state.inputfile);//Eventpro (CH); }return 0;}voidEventpro (CharCH) {Switch(g_state.ulstate) { CaseNo_comment_state:eventproatno (CH); Break; CaseC_COMMENT_STATE:EVENTPROATC (CH); Break; CaseCpp_comment_state:eventproatcpp (CH); Break; CaseSTR_STATE:EVENTPROATSTR (CH); Break; CaseEnd_state: Break; }}voidEventproatno (CharCH) {CharNextch;Switch(CH) { Case '/':// // /* Nextch = fgetc (g_state.inputfile);if(Nextch = ='/')//C + +{FPUTC ('/', g_state.outputfile); FPUTC (' * ', g_state.outputfile);        G_state.ulstate = cpp_comment_state; }Else if(Nextch = =' * ')//c{FPUTC (ch,g_state.outputfile);            FPUTC (Nextch,g_state.outputfile);        G_state.ulstate = c_comment_state; }Else{        } Break; CaseEOF:g_state.ulstate = end_state; Break; Case ' "': G_state.ulstate = str_state;default: FPUTC (Ch,g_state.outputfile); Break; }}voidEVENTPROATC (CharCH) {CharNextch;Switch(CH) { Case '/': Nextch = fgetc (g_state.inputfile);if(Nextch = ='/') {FPUTC ("', g_state.outputfile); FPUTC ("', g_state.outputfile); } Break; Case ' * ': Nextch = fgetc (g_state.inputfile);if(Nextch = ='/') {FPUTC (ch,g_state.outputfile);            FPUTC (Nextch,g_state.outputfile);        G_state.ulstate = no_comment_state; } Break;default: FPUTC (Ch,g_state.outputfile); Break; }}voidEventproatcpp (CharCH) {//123/*123    CharNextch;Switch(CH) { Case'/': Nextch =fgetc (G_state.inputfile);if(Nextch = ='/') {FPUTC ("', g_state.outputfile); FPUTC ("', g_state.outputfile); }Else  if(Nextch = =' * ') {FPUTC ("', g_state.outputfile); FPUTC ("', g_state.outputfile); }ElseFPUTC (Ch,g_state.outputfile); Break; Case' * ': Nextch =fgetc (G_state.inputfile);if(Nextch = ='/') {FPUTC ("', g_state.outputfile); FPUTC ("', g_state.outputfile); }ElseFPUTC (Ch,g_state.outputfile); Break; Case ' \ n ': FPUTC (' * ', g_state.outputfile); FPUTC ('/', g_state.outputfile); FPUTC (' \ n ', g_state.outputfile); G_state.ulstate = no_comment_state; Break; CaseEOF:FPUTC (' * ', g_state.outputfile); FPUTC ('/', g_state.outputfile); G_state.ulstate = end_state; Break;default: FPUTC (Ch,g_state.outputfile); Break; }}voidEVENTPROATSTR (CharCH) {CharNextch;Switch(CH) { Case' + ': Fgetc (G_state.inputfile);if(Nextch = =' "') g_state.ulstate = no_comment_state; Break; CaseEOF:g_state.ulstate = end_state; Break;default: FPUTC (Ch,g_state.outputfile); Break; }}

Input.c

//Each zone consists of several memory blocks//TRTE//DFGD//aaaaa*///*//*dfnmhj;///**/XFHG;/*dfg*//**//*jjjjjj//*/intj =0;/*//ggg//gg//gg*//**//**/Qqqqqqqqq/*mmmmmm*//*KKKKKKKK * */////////////////////////// /// /// /// /// /// /// ////2 "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"//aaaaaaaa "aaaaa///* * *""aaaaaaaaaaaaaa///* * *"

Output.c

/ * Each zone consists of several memory blocks * //*trte dfgd*//*AAAAA * */ * dfnmhj;*// * xfhg;*//*dfg*//**//*JJJJJJ * *intj =0;/ * GGG GG gg*//**//**/Qqqqqqqqq/*mmmmmm*//*KKKKKKKK * */ * 2*/"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"//aaaaaaaa "aaaaa///* * *""aaaaaaaaaaaaaa///* * *"

Comment Conversion?? --c++ comments to standard C language annotations