题目内容

下列程序段的输出结果是（）。intmain(void){intm=2,k=0,s=0;switch(m%4){case0:case1:s+=m;break;case2:case3:s-=m;break;}k+=s;printf("%d",k);return0;}

A. 10
B. -2
C. -4
D. -12

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