删除C/C++代码里的注释，并输出删除后的结果

样例输入

/*
This is a test
*/
#include <iostream>
using namespace std;

int main() // C/C++
{
    cout << "Hello World!" << endl; /* cout is c++'s printf */ /* hello world */
    return 0;
}
// end of file

样例输出

#include <iostream>
using namespace std;
int main() 
{
    cout << "Hello World!" << endl;  
    return 0;
}

#include <stdio.h>
#include <string>
#include <iostream>
#include <fstream>
using namespace std;

#pragma   pack(4) 
#define ES 0
#define EC 1
#define ED 2
#define EM 4
#define EME 8
int main()
{
    string strfile = "1.cpp";
    fstream file;
    file.open(strfile);
    string strcpp;
    while (!file.eof()) {
        char tmp[256];
        file.getline(tmp, 256);
        strcpp += tmp;
        strcpp += "\n";
        
    }
    file.close();
    string strout="";
    int len = strcpp.length();
    unsigned statue = ES;
    for (int i = 0; i < len; i++) {
        char c = strcpp[i];
        switch (statue)
        {
        case ES:
            if (c == '/')
                statue = EC;
            else
                strout += c;
            break;
        case EC:
            if (c == '*')
                statue = EM;
            else if (c == '/')
                statue = ED;
            else {
                statue = ES;
                strout += strcpp[i - 1];
                strout += c;
            }
            break;
        case ED:
            if (c == '\n')
                statue = ES;
            break;
        case EM:
            if (c == '*')
                statue = EME;
            break;
        case EME:
            if (c == '/')
                statue = ES;
            else
                statue = EM;
            break;
        default:
            break;
        }
    }
    cout << strout;
    return 0;
}