stringsA.c

#include "header.h"

/**
 * _strncat - concatenates from src string to dest string
 * @dest: destination string
 * @src: source string
 * @n: number of bytes to concatenate
 *
 * Return: pointer to destination
 */
char *_strncat(char *dest, char *src, int n)
{
	int i = 0, j = 0;

	while (dest[i] != '\0')
		i++;

	while (j < n && src[j] != '\0')
	{
		dest[i] = src[j];
		i++;
		j++;
	}

	dest[i] = '\0';

	return (dest);
}

/**
 * _strcmp - compares string
 * @s1: first string
 * @s2: second string
 *
 * Return: difference between two ascii valuves
 */

int _strcmp(const char *s1, const char *s2)
{
	int i;

	i = 0;

	while (TRUE)
	{
		if (s1[i] != s2[i])
			return (s1[i] - s2[i]);

		if (s1[i] == '\0' || s2[i] == '\0')
			break;

		i++;
	}

	return (0);
}

/**
 * _strlen - finds and returns length of string
 * @str: string to find length
 *
 * Return: length of string
 */
unsigned int _strlen(const char *str)
{
	int i = 0;

	while (str[i] != '\0')
		i++;

	return (i);
}

/**
 * _strdup - takes a string and copies to another a new memory location
 * @str: string to copy
 *
 * Return: pointer to copied string
 */
char *_strdup(char *str)
{
	unsigned int len, j;
	char *ptrstring;

	if (str == NULL)
		return (NULL);

	len = _strlen(str);

	ptrstring = safe_malloc((len + 1) * sizeof(char));

	for (j = 0; j < len; j++)
		ptrstring[j] = str[j];
	ptrstring[j] = '\0';

	return (ptrstring);
}

/**
 * _strncmp - checks if 2 strings are of equal value and length
 * @s1: first string
 * @s2: second string
 * @n: number of bytes to compare
 *
 * Return: difference of first chars of diff value or 0 on success
 */
int _strncmp(char *s1, char *s2, unsigned int n)
{
	unsigned int j;

	for (j = 0; j < n; j++)
		if (s1[j] != s2[j])
			return (s1[j] - s2[j]);

	return (0);
}