注释程序最后那出问题了?

#include"stdio.h"

void progress(char*str)
{
    char*beg,*tmp,rt=0 ;
    int sign = 0;
   
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    while(*str || sign)
    {
        if(*str=='\"')
        {
            while(*++str!='\"')
            if(*str=='\\')str++;
            str++;
        }
        else if(rt==0&&*str=='/')
        {
            beg=str++;
            if(*str=='*'||*str=='/')
            rt=(*str=='*')+1 ;
        }
        else if(rt==1 && *str=='\n'
                    ||(rt==2 && (*str=='*'&&*++str=='/'))
                    || sign == 1)
        {
            tmp=beg ;
            if(*str == '\0') {
                *beg = '\0';
            }
            else {
                str++;
                while(*beg++=*str++);
            }
            
            str=tmp ;
            rt=0 ;
            sign = 0;
        }
        else {
            if(rt == 1 && *(str + 1) == '\0') {
                sign = 1;
            }
            str++;
        }
    }
}

int main()
{
    char str[]="//============\n //simplest program\n//==============\n#include<iostream>\nusing namespace std;\n//----------------\nint main(){\ncount<<\"hello world!\n\";\n}//--------" ;
    char test[] = "//1234123";
   
   
    printf(str);
    printf("\n***********************\n");
    progress(str);
    printf("\n***********************\n");
    printf(str);
   
    getchar();
    return 0 ;
}