#include <stdio.h>
#include <stdlib.h>
 
char* ReadUserName(void)
{
	char* name = (char*)malloc(sizeof(char) * 30); //문자형 동적메모리 할당
	gets(name); //포인터가 가리키는 문자형 메모리공간에 문자열 입력받음
 
	return name; //포인터가 가리키는 메모리공간에 담긴 문자열값 반환
}
 
int main(void)
{
	char* name1;
	char* name2;
 
	name1 = ReadUserName(); //유저 이름 불러오는 함수를 참조
	printf("name1: %s\n", name1); //포인터 name1이 가리키는 함수의 반환값(문자열) 출력
 
	name2 = ReadUserName(); //유저 이름 불러오는 함수를 참조
	printf("name2: %s\n", name2); //포인터 name2이 가리키는 함수의 반환값(문자열) 출력
 
 
	printf("Again name1: %p\n", name1); //다시 name1 출력
	printf("Again name2: %p\n", name2); //다시 name2 출력
 
	free(name1); 
	free(name2); 
	printf("Again name1: %p\n", name1); //다시 name1 출력
	printf("Again name2: %p\n", name2); //다시 name2 출력
 
	return 0;
}
 

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