int c=7,d=8,z=3,a,x,y; a=c^d; x=c^d&-z; y=a&-z; cout
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![int c=7,d=8,z=3,a,x,y; a=c^d; x=c^d&-z; y=a&-z; cout](/uploads/image/z/13253932-28-2.jpg?t=int+c%3D7%2Cd%3D8%2Cz%3D3%2Ca%2Cx%2Cy%3B+a%3Dc%5Ed%3B+x%3Dc%5Ed%26-z%3B+y%3Da%26-z%3B+cout)
int c=7,d=8,z=3,a,x,y; a=c^d; x=c^d&-z; y=a&-z; cout
int c=7,d=8,z=3,a,x,y; a=c^d; x=c^d&-z; y=a&-z; cout
int c=7,d=8,z=3,a,x,y; a=c^d; x=c^d&-z; y=a&-z; cout
a=c^d=15 是异或,是逻辑运算.
x=c^d&-z=c^(d&(-z))=15 中&是位运算符.
y=a&-z=a&(-z)=13