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Why is the output value incorrect from the predetermined value? Please come in.

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Post time: 2020-1-4 22:00:01
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long a = 116;
long b = 20;
long c = 43;
long d = (a + (double) b / 60 + (double) c / 3600) * 100000;
cout << "d =" << d << endl;

Why is the output d = 11634527?
Rounding by calculator should be 11634528.

Can anyone tell me what the problem is? How to solve it?
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Post time: 2020-1-4 23:39:01
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Not rounded when processed by a computer
It converts decimals to integers.
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 Author| Post time: 2020-1-5 10:33:01
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Is there any way to get the correct value?
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Post time: 2020-1-5 10:57:01
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Use rounding functions, or do it yourself
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Post time: 2020-1-8 22:00:01
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Add 0.5 before rounding
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Post time: 2020-7-3 18:15:01
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Is there any way to get the correct value?
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What is the correct value? Is the rounded result the correct value? Analyze specific issues!
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