c++中 写一个两个字符串相连接的函数：char *strcat(char *s1,const char *s2) 其作用是将s2接到s1的末端

#include char *strcat(char *s1, const char *s2) { char *p; p = s1; while(*p) p++; while(*p++ = *s2++); return s1; } int main() { char s1[10] = "abc"; char s