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所以我即將在C語言程序中完成大學課程。 我想在位操作(如創建口罩)更好,所以我會去給它:面具(比特宏)
#define BIT_I_SET(TYPE,I) ((TYPE)(1) << (I))
#define SET_BIT(NUM,I,TYPE) \
NUM |= BIT_I_SET(I,TYPE)
我仍然在早期階段,學習此刻的語法,我不知道爲什麼編譯器說,有一個錯誤: 嚴重性代碼描述項目文件中的行抑制狀態 錯誤之前明顯通話括號必須有(指針TO-)函數類型Project14(活動)E0109表達
完整程序(是它是synatx只):
#include <stdio.h>
#include <stdlib.h>
#define SHIFT(I,TYPE) ((TYPE)(1) << (I))
#define NEGATIVE(TYPE) (~(TYPE)(0))
#define BIT_I_SET(TYPE,I) ((TYPE)(1) << (I))
#define BIT_I_CLEAR(I,TYPE) (~((TYPE)(1)<< (I)))
#define MSB_SET(TYPE) ((TYPE)(1) << (sizeof(TYPE)*8-1)
#define SET_BIT(NUM,I,TYPE) \
NUM |= BIT_I_SET(I,TYPE)
void main()
{
unsigned char i, j;
int shift = 3;
i = 0;
j = 0;
SET_BIT(j, 2, unsigned char);
printf("%d\n",sizeof(j));
printf("%d",i);
system("pause>null");
}