Thread: Read line

Is it possible to copy one word at a time from 1 line in the input file; or
it is only possible to character using getchar().

Please explain.

Originally Posted by Ron

Is it possible to copy one word at a time from 1 line in the input file; or
it is only possible to character using getchar().

Please explain.

You could parse the returned string and seperate the words or, you could use fgetc to return one byte at a time and do a constant check for ' ' (space) to denote the end and begining of a word.

Here you go - messy but I only just got it to work. No good reason to use the vector XYZ. It gets the xyz coords of a point from an ascii file and (will) whack them in an image.

Just I have 300MB files, so it works for a while then I get an access violation at x0000000 ish. Why?

Code:

int k = 0;
char line[50];
double XYZ[3];
char *token;
char seps[] = " ,\t";
while (! ascRast.eof() )
    {
    ascRast.getline(line, 50);
	long ij[2] = {0, 0};
	
	double XYZ[3];
	token = strtok(line, seps);
	XYZ[0] = atof(token);
	while (token != NULL)
	{
		k = 0;
		k++;
		token = strtok(NULL, seps);
		
		if (k == 1)
		XYZ[1]= atof(token);
		
		if (k==2)
		XYZ[2] = atof(token);
		
	}

	i = XYZ[0] - xMin;
	j = yMax - XYZ[1];
	vOut.fltVal = XYZ[2];

Code:

	while (token != NULL)
	{
		k = 0;
		k++;
		token = strtok(NULL, seps);
		
		if (k == 1)
		XYZ[1]= atof(token);
		
		if (k==2)
		XYZ[2] = atof(token);
		
	}

You make k = 0 on every iteration. Unintended most likely.