ft_strrev

Subject

Assignment name  : ft_strrev
Expected files   : ft_strrev.c
Allowed functions:
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Write a function that reverses (in-place) a string.

It must return its parameter.

Your function must be declared as follows:

char    *ft_strrev(char *str);

Commented solution

ft_strrev.c

#include <stdio.h>

char    *ft_strrev(char *str)
{
	int i;
	int len;
	char tmp;


	i = 0;
	len = 0;
	while (str[len])
		len++;
	while (i < len - 1)
	{
		tmp = str[i];
		str[i] = str[len - 1];
		str[len - 1] = tmp;
		i++;
		len--;
	}
	return (str);
}

/*int	main(void)
{
	char s[] = "Hello World";
	ft_strrev(s);
	printf("%s\n", s);
	return (0);
}