假设#1=-2.2,当执行#2=FUP[#1]时,-2.0赋予#2
假设#1=-2.2,当执行#2=FUP[#1]时,-2.0赋予#2
1
假设#1=-2.2,当执行#2=FUP[#1]时,-2.0赋予#2