【C语言】模拟实现库函数strcat函数

//模拟实现库函数strcat函数#include <stdio.h>#include <string.h>#include <assert.h>char * my_strcat(char *dst, const char *src){char *start = dst;int len_dst = strlen(dst);dst+=len_dst;while (*dst++ = *src++){;}return start;}int main(){char a[20] = "hello ";char *p = "world!";printf("%s\n", my_strcat(a, p));return 0;}