Printing charcter by character

**Ron** · 06-15-2008

Hi.....
I have to parse through an input XML file line-by-line, character-by-character and find if closing HTML tags are present for every opening HTML tag.

Code:

MAIN program:
	while (scanf("&#37;s", code) != EOF)
	{
		i=0;
		length = strlen(code);
		while (i < strlen(code))
		{
			c=code[i];
			if (c == '<')
			{
	                 j=0;

                                 do
	                         {
					c=code[i];
					element[j]=c;
					++i;
					j++;
				}while(c!='>');

				c=code[++i];

				element[j] = '\0';


				if (element[1] == '/')
				{
					l=element[2];
					length = strlen(element);
					for (k=0;k<=length-4;k++)
					{
						check[k]=element[l++];
					}
					check[k] = '\0';
					/*Function passsed tho process the element()*/
					printf("%s",element);

				}

				else
				{
					l=element[1];

					length = strlen(element);
					for (k=0;k<=length-3;k++)
					{
						check[k]=element[l++];

					}
					check[k]='\0';
					/*Function passsed tho process the element()*/
					printf("%s",element);
				}

			}
			else
			{
				putchar(c);
				c=code[++i];
			}

		}
	}

When printing to the output I find that any character that is printed just after '>' character without any spaces will not be printed to the output. Also no spaces from the input text is printed to the output.

Please help

**tabstop** · 06-15-2008

c=code[++i] skips past the character after the > (since i was also incremented in the search for the closing > loop as well). It is not possible to read a space using %s.

**C_ntua** · 06-15-2008

For the spaces just use fget() reading and checking for the '\n' character.
(Generally I prefer fget(). You have more control and you just have to use it in a while-loop checking for EOF or '\n' to read a line)

**Ron** · 06-15-2008

well i tried removing the line ++i. But still same result. Also, only characters between < & > will be stored in an array and printed as %s, rest will be displayed character-by-character.

If I were to use fgets(), I will have to use FILE input/ouput. The code will get more complicated then. Our assignment mentions to use standard input. so I can use scanf, gets(), etc.

**tabstop** · 06-15-2008

Originally Posted by Ron

Also, only characters between < & > will be stored in an array and printed as %s, rest will be displayed character-by-character.

How is that different than what you want?

Originally Posted by Ron

If I were to use fgets(), I will have to use FILE input/ouput.

That's the silliest thing I've ever heard.

**Ron** · 06-15-2008

I have to take each line from text as string, parse through it character-by-character. When it encounters <, search for >, make it as a string, if it does not have '!', push it into a stack, else pop the stack.the rest of the contents will be displayed character by charater.

eg. <title>I am a boy<!title>

Dont I have to FILE stream to use fgets()?

**MacGyver** · 06-15-2008

Use stdin as the argument for a FILE stream to fgets() if you want to read from standard in (which is usually the keyboard at the console).

Example:

Code:

fgets(..., ..., stdin);

**Ron** · 06-15-2008

can't I use any other functions besides FILE stream like gets() that will read even space character?

**MacGyver** · 06-15-2008

gets() is broken. Use fgets(). It doesn't require much more work, and it's proper and safe.

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