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if(c == ' '||c == '\n'|| c == '\t')
state = OUT;//如果是以上的三种字符,state为OUT
else //当c不是上面三种字符的时候判断,,这是最关键的
if(state == OUT){
state = IN;
}
if(c == ' '||c == '\n'|| c == '\t')
state = OUT;
else if(state == OUT){
state = IN;