Thread: reading a new line

Say I have read from a file.
And at a certain point in the middle of the line, I need to skip to the next line. What is the best way to do this, without creating a bunch of excess buffer trash?

How do you read from the file? Some code...

I was afraid of that

Code:

FILE *readfile;

int lexInit(char* filename)
{
	readfile = fopen(filename,"r");
	if(readfile == 0)
	{
		printf("\nfile could not be opened\n\n");
	}
	else
	{
		printf("\n File opened\n");
	}
	return 0;
}

int readchar()
{
	char ch;
	ch = fgetc(readfile);
	return ch;
}

int SkipWhiteSpace()
{
	char ch;
	ch = readchar();
	while(isspace(ch) || ch == '/')
	{
		if(ch == '/')
		{
			ch = readchar();
			if (ch == '/')
			{
				printf("skip line1\n");
				SkiptoEndofLine();
				printf("skip line2\n");
			}
			else
			{
				pushback('/');
				pushback(ch);
				break;
			}
		}
		//ch = readchar();
	}
	pushback(ch);
	return 0;
}

this is what I have so far but it doesn't work and doesn't seem wholly efficent

Code:

int SkiptoEndofLine()
{
	char *trash, line[100];
	trash = NULL;
	fgets(trash, sizeof(line), readfile);
	return 0;
}

If I could just figure out a way to skip to the next line, everytime
SkiptoTheEndofLine is called, I'd be gravy...
Well not literally

Why don't you read a line at once form the file and process every char in that line until you need to skip to the next line? Wouldn't be simpler this way?

it would be simpler, but due to the nature of the program, I must process char by char
There is simply no way around that

I guess you want something like this:

Code:

int SkiptoEndofLine()
{
  while (readchar()!='\n')
  {
    ;
  }
}

I appreciate all of your help!
I can go to bed now