#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
int main(void)
{
char s[11] = "Hello";
strcat(s, "World"); // s¿¡ ¹®ÀÚ¿ “World"¸¦ ºÙÀδÙ.
printf("%s \n", s);
return 0;
}