看到程式碼如下
#include<stdio.h>
#include<stdlib.h>
1 int main(void)
2 {
3 unsigned char x=1;
4 unsigned long y=3;
5
6 for (;;){
7 printf("y = %d\n", y );
8
9 *( (unsigned char*)(&y)+1 )= *( (unsigned char*)(&y)+1 )+x;
10
11 system("pause");
12 }
13 system("pause");
14 return 0;
15 }
這程式第9行 可看成 y=y+x*256;
但不曉得為什麼可以這樣子用?
板上大大們可否幫小弟解惑一下 感激不盡
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