在C++中設置（短整型）的高位和低位字節

Question

我對設置（短整型）的高位和低位字節有問題。 請看我的代碼，它只是返回數字1，但必須返回55。

int number = 55; 
int mynumber = 0; 

//convert short int to char. 
char upper = number >> 8; 
char lower = number && 8; 

//convert char to short int . 
mynumber = (mynumber & 0xff00) | lower; 
mynumber = (mynumber & 0x00ff) | (upper << 8); 

printf("%i",mynumber); 

Answer 1

的lower計算是錯誤的：

char lower = number & 0xff;