[inlinecode]#include<stdio.h>
void main()
{
	FILE *fp;
	char ch;
	//clrscr();
	fp=fopen("temp.txt","r");
	while(1)
	{
		ch=fgetc(fp);
 
		if(ch==EOF)
		break;
		else
		{
			if(ch=='/'){
			ch=fgetc(fp);
			if(ch=='/') 
			{
				while(1)
				{
					ch=fgetc(fp);
					if(ch=='\n')
					goto label;
				}
			}
			if(ch=='*')
			{ 
				while(1)
				{
					ch=fgetc(fp);
					if(ch=='*')
					{ 
						ch=fgetc(fp);
						if(ch=='/')
						{
							while(1)
							{
								ch=fgetc(fp);
								goto label;
							}
						}
						else printf("*");
					}
				}
			}
			else printf("/");
		}
	}
	label:printf("%c",ch);
	}
	fclose(fp);
}[/inlinecode]

enum state_t {
  normal,
  comment_start,
  in_comment,
  comment_end
};

int ch;
state_t myState = normal;
while ( (ch=fgetc(fp)) != EOF ) {
  if ( state == normal ) {
    if ( ch == '/' ) {
      // could be the start of a comment, advance state
      state = comment_start;
    } else {
      // any other char, just print it
    }
  } else
  if ( state == comment_start ) {
    if ( ch == '*' ) {
      // really is the start of a comment
      state = in_comment;
    } else {
      // the / was not part of "/*", so print it and revert back to normal
      state = normal;
    }
  } else
  if ( state == comment_end ) {
  }
}

int main ( ) {
  printf( "/* this is a comment */\n" );
  return 0;
}