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Asked: 2026-05-20T00:55:14+00:00

I’m just amazed to know that I can’t convert signed to unsigned int by

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I’m just amazed to know that I can’t convert signed to unsigned int by casting!

int i = -62;
unsigned int j = (unsigned int)i;

I thought I already knew this since I started to use casts, but I can’t do it!

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1 Answer

  1. Editorial Team

    You can convert an int to an unsigned int. The conversion is valid and well-defined.

    Since the value is negative, UINT_MAX + 1 is added to it so that the value is a valid unsigned quantity. (Technically, 2N is added to it, where N is the number of bits used to represent the unsigned type.)

    In this case, since int on your platform has a width of 32 bits, 62 is subtracted from 232, yielding 4,294,967,234.

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