還沒理解這其中的奧祕，有知道說下

#include <stdio.h>
#include <string.h>
int main()
{
    char str_t[]="This String comes from t";//初始化字元陣列
    char str_s[]="This is an empty s";//初始化字元陣列
    printf("%s %ld\n%s %ld\n",str_t, strlen(str_t), str_s, strlen(str_s));
    char *t=str_t;//初始化字元指標
    char *s=str_s;//初始化字元指標
 

    while(*s++=*t++);//*的優先順序比++高，且為右結合，因此會將t的值逐個賦值給s，直到結果為'\0'
    printf("%s %ld\n%s %ld\n",str_t, strlen(str_t), str_s, strlen(str_s));                                                      

    return 0;
}

[email protected]:# ./xx
This String comes from t 24
This is an empty s 18
This String comes from t 24
This String comes from t 24
 

看到沒，字元陣列的空間被擴充套件了，但是沒有進行過記憶體申請。。。