若有定义语句int a , b ; double x; 则下列选项中没有错误的是
A.
switch (x%2) { case 0: a++; break; case 1: b++: break; default: a++; b++; }
B.
switch((int)x/2.0) { case 0: a++; break; case 1: b++; break; default: a++; b++; }
C.
switch((int)x%2) { case 0: a++; break; case 1: b++; break; default: a++; b++; }
D.
switch((int)(x)%2) { case 0.0: a++;bresk; case 1.0: b++;break; default: a++; b++; }