I''ve invested about 9 hours so far trying to figure this out so I decided to post here. There is probably a simple solution that I am overlooking, but I can''t find it for the life of me. I have an input file that has 128x128 array entries on it. Each entry is separated by a tab ''\t'', character. Here is the problem.. the file is set up something like this: 001 - 1 33 11 1 2 3 ..etc.. 002 - 33 1 2 623 1 5 ..etc.. The 001, 002, etc on the left are the row number (just for human readability). I want to simply get the array entries (1, 33, 11, 1, 2, 3) and put them into my array (type int). I''ve successfully written the code to read 1 char at a time, cast to ints, and store them in the array.. however... it only works for SINGLE DIGIT numbers. The numbers can be 1-3 digits long. How do I do this? I''ve tried methods getting 1 char at a time, but I ran into the above issue. I tried getting an entire line at once, but I ran into the above issues plus issues with ignoring the first 5 chars (the line number and such). I''ve tried using atoi() functions... no luck. Any hints/solutions would be hugely appreciated Thanks.

Try using fstream and the << and >> operators. Your file setup is almost ideal for this method.

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fscanf - MMmmMMmmm, my favorite.

Here's the code. I've never used >> except with keyboard input. I read the documentation, and I thought I was doing it right, but I guess not.

When I run the program, it exits immediately and prints nothing to the output file (the printing code isn't shown, but it works).

EDIT: oh, and yes it's C++

	input_file.get(ch);	// strip out the comments	while (!input_file.eof()) {						// while not end of the file		// if not a comment, line spacer, return or a space, parse it		if (ch != ';' && ch != '-' && ch != '\n' && ch != ' ') {			input_file.ignore(5);					// ignore the characters for human readability			while (ch != '\n' && !input_file.eof()) {				input_file >> temp;				CurrentMap.base[y][x] = (unsigned char)temp;				input_file.ignore(1);				x++;								// next column				if (ch == '\n') {					// new row					x = 0;								// set x back to the far left column					y++;								// increment y to the next row				}			}		}		else {										// else			while (ch != '\n') {						// it's a comment (semi-colon),  go to the next line!				input_file.get(ch);			}		}		input_file.get(ch);	}  

[edited by - shyam on April 12, 2004 6:56:48 PM]

[Edit by Oluseyi: Because horizontal page scrolling is just wrong.]

[edited by - Oluseyi on April 12, 2004 7:57:51 PM]

I love you sir

The problem was partially with my input.. But it was mainly with my output. I was attempting to print 1 char at a time to out_file. woops

One last question: How can I test for end of file using cin?

[edited by - shyam on April 12, 2004 7:57:16 PM]