switch (type) {
case truthType:
question = ......
break;
default:
question = nil;//这个最好加上
break;
switch (type) {
case truthType:
question = ......
break;
default:
question = nil;//这个最好加上
break;
转载于:https://www.cnblogs.com/zander/archive/2012/08/17/2644198.html