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Are there any non-twos-complement implementations of C?

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问题 As we all no doubt know, the ISO C standard (and C++ as well, I think, though I\'m more interested on the C side) allows three underlying representations of signed numbers: two\'s complement; ones\' complement; and sign/magnitude. Wikipedia\'s entry states that sign/magnitude is used on the IBM 7090 from the 60s, and that ones\' complement is used by the PDP-1, CDC 160A and UNIVAC 1100, all of which date back to the 60s as well. Are there any other implementations of C (or underlying hardware

How to print (using cout) a number in binary form?

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问题 I\'m following a college course about operating systems and we\'re learning how to convert from binary to hexadecimal, decimal to hexadecimal, etc. and today we just learned how signed/unsigned numbers are stored in memory using the two\'s complement (~number + 1). We have a couple of exercises to do on paper and I would like to be able to verify my answers before submitting my work to the teacher. I wrote a C++ program for the first few exercises but now I\'m stuck as to how I could verify

How to print (using cout) a number in binary form?

阅读更多关于 How to print (using cout) a number in binary form?

I'm following a college course about operating systems and we're learning how to convert from binary to hexadecimal, decimal to hexadecimal, etc. and today we just learned how signed/unsigned numbers are stored in memory using the two's complement (~number + 1). We have a couple of exercises to do on paper and I would like to be able to verify my answers before submitting my work to the teacher. I wrote a C++ program for the first few exercises but now I'm stuck as to how I could verify my answer with the following problem: char a, b; short c; a = -58; c = -315; b = a >> 3; and we need to show