for(double aa=0.05; aa

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for(double aa=0.05; aa

for(double aa=0.05; aa
for(double aa=0.05; aa

for(double aa=0.05; aa
因为你把变量bb定义成了int型,将它定义为float或double型便是了.更简便的是直接在输出时乘100,就这样:cout