0:printf____; case 1 printf____;
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0:printf____; case 2 printf____;} } C.switch____ D.switch____{ {
printf____; case 1:printf____;default:printf____; case 2:printf____;
+2:printf____; default:printf____;} }
m=1;else if(x<70) m=2; else if(x<80) m=3; else if(x<90) m=4; else if(x<100) m=5;switch语句:switch(____){ ____ m=1;break;