// RemoveComments.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include <iostream>#include <fstream>#include <string.h>using namespace std;void removeComments(char* buf,int n);int main(int argc, char* argv[]){//    printf("Hello World!\n");    string filename = "FileWithComments.cpp";    ifstream fin;    int length;    char * buffer;    try{        fin.open(filename.c_str());    }catch (std::exception &e)     {        cout<<e.what()<<endl;    }    if (fin.is_open()) {        cout<<"Success!"<<endl;        fin.seekg(0,std::ios::end);        length = fin.tellg();        fin.seekg(0,std::ios::beg);        buffer = new char[length];        fin.read(buffer,length);        fin.close();        buffer[length-1]=‘\0‘;        cout<<buffer<<endl;        removeComments(buffer,length);        cout<<"---------------------------------------"<<endl;        cout<<buffer<<endl;    }    return 0;}void removeComments(char* buf,int n){    char c;    char *p,*end;//p遍历字符串,end是终点    char *sy,*dy;//sy标志双引号，dy标志单引号    char *xg;//xg标志斜杠/    char *xgx,*xxg;//xgx标志/*，xxg标志*/    sy=dy=xg=xgx=xxg=NULL;    p = buf;    end = p + n;    while (p<end) {        c = *p;        switch(c) {        case ‘"‘://记录双引号出现的位置            {                if (sy==NULL&&dy==NULL) {                    sy = p;                }else{                    sy = NULL;                }                                p++;            }break;        case ‘\‘‘://记录单引号出现的位置            {                if (dy==NULL&&sy==NULL) {                    dy = p;                }else{                    dy = NULL;                }                                p++;            }break;        case ‘/‘:            {                if (sy==NULL&&dy==NULL) {                    p++;                    char c_temp = *p;                    if (c_temp==‘/‘) {//当前遇到的是"//"                        *p=‘ ‘;                        *(p-1)=‘ ‘;                        p++;                        while (*p!=‘\n‘) {                            *p=‘ ‘;                            p++;                        }                        /*//"""""‘‘‘‘‘                        *                            */                    }else if (c_temp==‘*‘) {//当前遇到的是"/*"                        *p=‘ ‘;                        *(p-1)=‘ ‘;                        p++;                        xgx = p;                        while (true) {                            if (*p==‘*‘&&*(p+1)==‘/‘) {                                *p=‘ ‘;                                p++;                                *p=‘ ‘;                                break;                            }                            *p=‘ ‘;                            p++;                        }                    }else{                        //nothing                    }                }                p++;            }break;        default:            {                p++;            }break;                    }    }    }