alternative of strchr implemented

custom_strtok.c

@@ -20,7 +20,7 @@ char *alt_strtok(char *string, const char *del)
 		return (NULL);
 	}
 
-	while (*remainder != '\0' && strchr(del, *remainder) != NULL)
+	while (*remainder != '\0' && strchr_alt(del, *remainder) != NULL)
 	{
 		remainder++;
 	}

shell.h

@@ -51,7 +51,7 @@ void shell_env(void);
 size_t strlen_alt(const char *s);
 char *strcat_alt(char *dest, const char *src);
 int strcmp_alt(char *s1, char *s2);
-const char *strchr_alt(const char *s, char c);
+char *strchr_alt(const char *s, char c);
 char *strdup_func(const char *s);
 char *strncat_alt(char *dest, char *src, int n);
 size_t strspn_alt(char *s, char *accept);

str_1.c

@@ -3,16 +3,16 @@
 size_t strlen_alt(const char *s);
 char *strcat_alt(char *dest, const char *src);
 int strcmp_alt(char *s1, char *s2);
-const char *strchr_alt(const char *s, char c);
+char *strchr_alt(const char *s, char c);
 char *strcpy_alt(char *destination, char *source);
 char *getenv_alt(const char *variable_name);
 /**
-*strlen_alt - Entry point
-* Description - 'function returning length of a string'
-* @s: string to be measured
-*
-* Return: the length of given string 's'
-*/
+ *strlen_alt - Entry point
+ * Description - 'function returning length of a string'
+ * @s: string to be measured
+ *
+ * Return: the length of given string 's'
+ */
 size_t strlen_alt(const char *s)
 {
 	size_t len = 0;
@@ -25,136 +25,131 @@ size_t strlen_alt(const char *s)
 }
 
 /**
-* strcat_alt - Entry point
-* Description - 'a function concantenating two strings'
-* @dest: char string type
-* @src: char string type
-*
-* Return: pointer to the concantenated string
-*/
+ * strcat_alt - Entry point
+ * Description - 'a function concantenating two strings'
+ * @dest: char string type
+ * @src: char string type
+ *
+ * Return: pointer to the concantenated string
+ */
 char *strcat_alt(char *dest, const char *src)
 {
-int dest_len = 0;
-int h;
+	int dest_len = 0;
+	int h;
 
 
-/*Find the length of the destination string*/
+	/*Find the length of the destination string*/
 
 
-while (dest[dest_len] != '\0')
-{
-dest_len++;
-}
+	while (dest[dest_len] != '\0')
+	{
+		dest_len++;
+	}
 
 
-/*append the first string to the destination string */
+	/*append the first string to the destination string */
 
 
-for (h = 0; src[h] != '\0'; h++)
-{
-dest[dest_len + h] = src[h];
-}
-/* add null terminating character to concantenated string */
+	for (h = 0; src[h] != '\0'; h++)
+	{
+		dest[dest_len + h] = src[h];
+	}
+	/* add null terminating character to concantenated string */
 
 
-dest[dest_len + h] = '\0';
+	dest[dest_len + h] = '\0';
 
 
-return (dest);
+	return (dest);
 }
 
 
 
 
 /**
-* strcmp_alt - Entry point
-* Description - 'a function comparing two strings'
-* @s1: first string to be checked
-* @s2: second string to be checked
-*
-* Return: value less than 0 means s1 is less than s2
-* value equal to 0 meants s1 = s2
-* value greater than 0 means s1 is greater than s2
-*/
+ * strcmp_alt - Entry point
+ * Description - 'a function comparing two strings'
+ * @s1: first string to be checked
+ * @s2: second string to be checked
+ *
+ * Return: value less than 0 means s1 is less than s2
+ * value equal to 0 meants s1 = s2
+ * value greater than 0 means s1 is greater than s2
+ */
 
 
 int strcmp_alt(char *s1, char *s2)
 {
-int len;
+	int len;
 
 
-for (len = 0; s1[len] == s2[len] && s1[len]; len++)
-;
+	for (len = 0; s1[len] == s2[len] && s1[len]; len++)
+		;
 
 
-if (s1[len] > s2[len])
-return (1);
-if (s1[len] < s2[len])
-return (-1);
-return (0);
+	if (s1[len] > s2[len])
+		return (1);
+	if (s1[len] < s2[len])
+		return (-1);
+	return (0);
 }
 
 
 
 
 /**
-* strchr_alt - Entry point
-* Description - ' a function searching for the first occurence of a character
-* in a string'
-* @s: a pointer to the string to be searched
-* @c: the character to be searched for
-*
-* Return: a pointer to the first occurrence of the char c in s
-* 0R 0 if char c is not found in s
-*/
-
-
-const char *strchr_alt(const char *s, char c)
-{
-int h;
+ * strchr_alt - Entry point
+ * Description - ' a function searching for the first occurence of a character
+ * in a string'
+ * @s: a pointer to the string to be searched
+ * @c: the character to be searched for
+ *
+ * Return: a pointer to the first occurrence of the char c in s
+ * 0R 0 if char c is not found in s
+ */
 
 
-for (h = 0; s[h] >= 0; h++)
-{
-if (s[h] == c)
+char *strchr_alt(const char *s, char c)
 {
-return (s + h);
-}
-}
-return (NULL);
+	while (*s != '\0')
+	{
+		if (*s == c)
+			return ((char *)s);
+		s++;
+	}
+	return (NULL);
 }
 
-
 /**
-* memcpy_alt - Entry point
-* Description: 'function copying memory area'
-* @src: source char string type
-* @dest: destination string type
-* @n: maximum number of byte area to be copied
-* Return: pointer to destination string
-*/
+ * memcpy_alt - Entry point
+ * Description: 'function copying memory area'
+ * @src: source char string type
+ * @dest: destination string type
+ * @n: maximum number of byte area to be copied
+ * Return: pointer to destination string
+ */
 
 
 char *memcpy_alt(char *dest, char *src, unsigned int n)
 {
-unsigned int h = 0;
+	unsigned int h = 0;
 
 
-for (h = 0; h < n; h++)
-{
-dest[h] = src[h];
+	for (h = 0; h < n; h++)
+	{
+		dest[h] = src[h];
 
 
-}
-return (dest);
+	}
+	return (dest);
 }
 /**
-  * strcpy_alt - Entry point
-  * Description - 'a function copying one pointer to another pointer'
-  * @source: char type string
-  * @destination: char string type
-  * Return: Pointer to dest
-  */
+ * strcpy_alt - Entry point
+ * Description - 'a function copying one pointer to another pointer'
+ * @source: char type string
+ * @destination: char string type
+ * Return: Pointer to dest
+ */
 
 char *strcpy_alt(char *destination, char *source)
 {
@@ -177,17 +172,17 @@ char *strcpy_alt(char *destination, char *source)
  */
 char *getenv_alt(const char *variable_name)
 {
-	 int name_length = strlen_alt(variable_name);
+	int name_length = strlen_alt(variable_name);
 
 	char **env;
 
 	for (env = environ; *env; ++env)
 	{
-	if (strncmp_alt(variable_name, *env, name_length)
-		== 0 && (*env)[name_length] == '=')
-	{
-		return (&((*env)[name_length + 1]));
-	}
+		if (strncmp_alt(variable_name, *env, name_length)
+				== 0 && (*env)[name_length] == '=')
+		{
+			return (&((*env)[name_length + 1]));
+		}
 	}
 	return (NULL);
 }