Thread: unix fold utility

Hello again! lol. I have to create a fold utility program as our final project (we had 3 choices). I am having trouble getting started on it. I will post a link to the description of what the fold command is supposed to do.

http://www.conestogac.on.ca/~set/cou..._fold_2008.htm

This is due on Tuesday btw.

UPDATE: So far I have this...

Code:

#include <stdio.h>

int main(int argc, char *argv[])
{
	FILE *inputFile; //pointer to a file//

	if (argv[1] == '-s')
	{
	// Fold line after the last blank character within the first width column positions. 
	// If there is no such character, fold anyway. 
	}

	if (argv[2] == '-w' && argv[3] == /* width variable here*/)
	{
	// Specify a line width to use instead of the default 80 columns.
	}

	inputFile = fopen(argv[4], "r"); //open a file for reading//

	if (inputFile = fopen(argv[4], "r") == NULL)
	{
		printf("Cannot open file for reading.\n"); //display error if file is not found//
		return -1;
	}
	
	if (inputFile = fopen(argv[4], "r") != NULL)
	{
		return -2;
	}

	//other code here//

	return 0;
}

I guess that separate functions would be a good idea to use for each command line argument?