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How to find if two numbers are with different sign?

+3 votes
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Given two numbers say int32, please help to write a function that returns true if the signs of given integers are different, otherwise false.

posted Nov 29, 2013 by Sanketi Garg

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1 Answer

0 votes

Check this, logic is simple if highest bit xor is 1 then different sign else same sign

bool different_sign (int a, int b)
{
    return ((a ^ b) < 0);
}
answer Nov 29, 2013 by Salil Agrawal
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Answer

1       6       8       9       0  ----> 3
                                         |
4       9       -5      5       11      13
                                         |
8       9       44      23      15      -20
                                         |
7 <---- 9 <---- 7 <--- -13 <--- 14 <---  11     
|
0       16      23      31      16        7

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