ft_memset - chanhl22/libft GitHub Wiki

  1 /* ************************************************************************** */
  2 /*                                                                            */
  3 /*                                                        :::      ::::::::   */
  4 /*   memset.c                                           :+:      :+:    :+:   */
  5 /*                                                    +:+ +:+         +:+     */
  6 /*   By: chanhlee <[email protected].>       +#+  +:+       +#+        */
  7 /*                                                +#+#+#+#+#+   +#+           */
  8 /*   Created: 2021/01/01 11:33:55 by chanhlee          #+#    #+#             */
  9 /*   Updated: 2021/02/01 11:13:37 by chanhlee         ###   ########.fr       */
 10 /*                                                                            */
 11 /* ************************************************************************** */
 12 
 13 #include "libft.h"
 14 
 15 void    *ft_memset(void *dst, int val, size_t size)
 16 {
 17     size_t          i;
 18     unsigned char   *ptr; // 포인터 주소를 나타내려면 unsigned char을 써야한다!!, 
 19                                                                                           
 20     ptr = (unsigned char*)dst; //또한 반환값이 dst이므로 새로 변수를 받아서 넣어줘야한다. (주소값이 달라지면 안된다.)
 21     i = 0;
 22     while (i < size)
 23     {
 24         *(ptr + i) = (unsigned char)val; //넣어줌
 25         i++;
 26     }   
 27     return (dst);
 28 }