task 0

Author: ebuka1017

0x0C-more_malloc_free/README.md

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+MORE MALLOC
+******************

0x0C-more_malloc_free/main.h

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+#ifndef _MAIN_H_ 
+#define _MAIN_H_
+
+
+/**
+ * _atoi - converts char to int
+ */
+
+int _atoi(char *s);
+
+/**
+ * _putchar - writes to standard output
+ *
+ * @c: character to compare
+ *
+ * Return: 1 or 0
+ */
+
+int _putchar(char c);
+
+/**
+ * print_alphabet - func to print alphabet in lowercase
+ */
+void print_alphabet(void);
+
+/**
+ * print_alphabet_x10 - func to print lowercase alphabets 10x
+ */
+
+void print_alphabet_x10(void);
+
+/**
+ * _islower - function checking for a lowercase character
+ *
+ * Return: 1 if islower or 0
+ */
+
+int _islower(int c);
+
+/**
+ * _isalpha - checks if char is an alphabet
+ *
+ * Return: 1 if isalpha, 0 otherwise
+ */
+
+int _isalpha(int c);
+
+/**
+ * print_sign - func to print sign of a number
+ *
+ * Return: 1 if positive, -1 if negative, 0 if 0
+ */
+
+int print_sign(int n);
+
+/**
+ * _abs - computes absolute value of an int
+ */
+
+int _abs(int);
+
+/**
+ * print_last_digit - prints last digit of a number
+ *
+ *Return: value of last digit
+ */
+
+int print_last_digit(int n);
+
+/**
+ * jack_bauer - prints timer
+ *
+ */
+
+int jack_bauer(void);
+
+/**
+ * times_table - prints the 9 times table
+ */
+
+void times_table(void);
+
+/**
+ * add - sums up two integers a & b
+ *
+ * Return: sum of two ints a,b
+ */
+
+int add(int, int);
+
+/**
+ * print_to_98 - counts from n to 98
+ */
+
+void print_to_98(int n);
+
+/**
+ * print_times_table - prints n times table
+ */
+
+void print_times_table(int n);
+
+/**
+ * reset_to_98 - takes pointer to an int as parameter and resets the value to 98
+ */
+
+void reset_to_98(int *n);
+
+/**
+ * swap_int - swaps values of two integers
+ */
+
+void swap_int(int *a, int *b);
+
+
+/**
+ * _strlen - returns string length
+ */
+
+int _strlen(char *s);
+
+/**
+ * _puts - prints a string to standard output
+ */
+
+void _puts(char *str);
+
+/**
+ * print_rev - prints a string in reverse
+ */
+
+void print_rev(char *s);
+
+/**
+ * rev_string - reverses a string
+ */
+
+void rev_string(char *s);
+
+/**
+ * puts2 - prints every other character of a string, starting with the first character, followed by a new line.
+ */
+
+void puts2(char *str);
+
+/**
+ * puts_half - prints half of a string
+ */
+
+void puts_half(char *str);
+
+/**
+ * _strcat - concatenates two strings
+ */
+
+char *_strcat(char *dest, char *src);
+
+/**
+ * _strncat - concatenates two strings
+ */
+
+char *_strncat(char *dest, char *src, int n);
+
+/**
+ * _strncpy - copies string
+ */
+
+char *_strncpy(char *dest, char *src, int n);
+
+/** 
+ * _strcmp - compares two strings
+ */
+
+int _strcmp(char *s1, char *s2);
+
+/**
+ * _memset - fills the first n bytes of the memory area pointed to by s with the constant byte b
+ */
+
+char *_memset(char *s, char b, unsigned int n);
+
+/**
+ * _memcpy - copies n bytes from memory area src to memory area dest
+ */
+
+char *_memcpy(char *dest, char *src, unsigned int n);
+
+/**
+ * _strchr - locates a character in a string
+ */
+
+char *_strchr(char *s, char c);
+
+/**
+ * _strspn - gets the length of a prefix substring
+ */
+
+unsigned int _strspn(char *s, char *accept);
+
+/**
+ * _strpbrk - searches a string for any of a set of bytes.
+ */
+
+char *_strpbrk(char *s, char *accept);
+
+/**
+ * _strstr - locates a substring
+ */
+
+char *_strstr(char *haystack, char *needle);
+
+/**
+ * prints_chessboard - prints chessboard
+ */
+
+void print_chessboard(char (*a)[8]);
+
+/**
+ * print_diagsum - prints the sum of the two diagonals of a square matrix of integers.
+ */
+
+void print_diagsums(int *a, int size);
+
+/**
+ * _puts_recursion - priints a string
+ */
+
+void _puts_recursion(char *s);
+
+/**
+ * _print_rev_recursion - prints a string in reverse
+ */
+
+void _print_rev_recursion(char *s);
+
+/**
+ * _strlen_recursion - returns the length of a string
+ */
+
+int _strlen_recursion(char *s);
+
+/**
+ * factorial - returns the factorial of a given number
+ */
+
+int factorial(int n);
+
+/**
+ * _pow_recursion - returns the value of x raised to power y
+ */
+
+int _pow_recursion(int,int);
+
+/**
+ * _sqrt_recursion - returns natural square root of number
+ */
+
+int _sqrt_recursion(int n);
+
+/**
+ * is_prime_number - returns 1 if prime
+ */
+
+int is_prime_number(int n);
+
+/**
+ * create_array - creates an array of chars
+ */
+
+char *create_array(unsigned int size, char c);
+
+/**
+ * _strdup - returns a pointer to a newly allocated space in memory
+ */
+
+char *_strdup(char *str);
+
+/**
+ * str-concat - concatenates two strings
+ */
+
+char *str_concat(char *s1, char *s2);
+
+/**
+ * alloc_grid - returns pointer to a 2d array of ints
+ */
+int **alloc_grid(int width, int height);
+
+/**
+ * free_grid - frees grid creatd by alloc_grid func
+ */
+
+void free_grid(int **grid, int height);
+
+/**
+ * malloc_checked - memory allocator
+ */
+
+void *malloc_checked(unsigned int b);
+
+#endif
+

0x0C-more_malloc_free/malloc_checked.c

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+#include "main.h"
+#include <stdlib.h>
+
+/**
+ * malloc_checked - allocates memory using malloc
+ * @b: integer to check
+ * Return: a pointer to void
+ */
+
+void *malloc_checked(unsigned int b)
+{
+    void *ptr = malloc(b);
+
+    if (ptr == NULL)
+    {
+        exit(98);
+    }
+
+    return ptr;
+}
+