Pool_21/aff_a.c

/* Assignment name  : aff_a
Expected files   : aff_a.c
Allowed functions: write
--------------------------------------------------------------------------------

Write a program that takes a string, and displays the first 'a' character it
encounters in it, followed by a newline. If there are no 'a' characters in the
string, the program just writes a newline. If the number of parameters is not
1, the program displays 'a' followed by a newline.

Example:

$> ./aff_a "abc" | cat -e
a$
$> ./aff_a "dubO a POIL" | cat -e
a$
$> ./aff_a "zz sent le poney" | cat -e
$
$> ./aff_a | cat -e
a$ */

#include <unistd.h>

int	main(int argc, char **argv)
{
	(void)	*argv;
	char	a;
	int		i;
	char	n;

	a = 'a';
	i = 0;
	n = '\n';
	if (argc != 2)
		write(1, &a, 1);
   	else 
		while (argv[1][i] != '\0')
		{
			if (argv[1][i] == 'a')
			{
				write(1, &a, 1);
				write(1, &n, 1);
				return (0);
			}
			else
				i++;
		}
		write(1, &n, 1);
}