?? 邏輯移動(dòng).c
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#include<stdio.h>
int main(void)
{
int x = 32;
unsigned int y = 23;
x<<=1; //與 (signed int)x<<=2; 相同,因?yàn)樽兞勘旧硎莝igned
//(unsigned int)x<<=2;
//x>>=2;
//(unsigned int)x>>=2;
(signed int)y<<=2;
y<<=2;
(signed int)y>>=2;
y>>=2;
printf("%d %d ",x,y);
return x+y;
}
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