This is what I am getting and I don't get why this output is coming. when I change float to int it is giving proper output.
int delta=99999997/(float)1;
cout<<delta<<endl;
Output: 100000000
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Konrad Rudolph
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Akash Singh
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3Please provide all your code, inputs, outputs, and errors as text in the post. – rawrex Jun 11 '21 at 11:04
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1Your number has too many digits, `float` cannot represent it exactly. – n. 1.8e9-where's-my-share m. Jun 11 '21 at 11:10
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IEEE-754 single precision float can store about ~7 digits of precision so it can't represent such numbers. [Strange behavior when casting an int to float in C](https://stackoverflow.com/q/27113114/995714) – phuclv Jun 11 '21 at 11:26
1 Answers
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When you divide an integer by a floating point number, the integer is converted to a floating-point number.
The reason for the weird result is that 99999997 cannot be represented exactly in a 32 bit floating point number with the precision used by C++’s float on your architecture.
Instead, when converted to a float, this number gets rounded to the next number which is representable. And that number … happens to be 100000000.
Konrad Rudolph
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1The `int` is converted to a `float`. This is not a promotion. Promotions never change the value. – Eric Postpischil Jun 11 '21 at 19:41