Why does Serial.println(convert.i); print 28836? union data{ float f; int i; } convert; void setup() { Serial.begin(9600); float f = 1.23; Serial.println(convert.i); } void loop() {}

What were you expecting it to print? Which processor are you using?

[image] lumj3967: float f = 1.23; Serial.println(convert.i); Did you mean: convert.f = 1.23; Serial.println(convert.i); In either case the 'float' and 'int' don't have the same bit layout so you can't 'convert' that way. Did you want the integer part? float f = 1.23; int i = f…

The reason you're seeing the specific value you're getting is the binary representation of floating point numbers, as described by the IEEE-754 standard: https://www.h-schmidt.net/FloatConverter/IEEE754.html When comparing the result of the FloatConverter above to the one you're getting, you may h…

Ok, thanks everyone who contributed. Also, I meant convert.f = 1.23, not float f = 1.23

Float to Int in Union

Projects Programming

groundFungus October 25, 2022, 5:44pm 4

Using a union to convert data types is called type punning and is not legal in C++. See this recent discussion, Problem with the use of union

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Float to Int in Union

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