c
/*
* @Author: 无涯 (mxl233@qq.com)
* @Date: 2023-08-12 18:05:44
* @LastEditors: 开心好梦🥳
* @LastEditTime: 2023-08-12 18:36:35
* @FilePath: ex-03.c
*/
#include <stdio.h>
/* strcat: concate string s and t. pointer version. */
void strcat(char *s, char *t);
int main(){
char s[100] = "hello,";
char t[100] = " world!";
strcat(s, t);
printf("%s\n", s);
return 0;
}
void strcat(char *s, char *t){
while (*s++ != '\0');
s--;
while (*s++ = *t++);
}