cout << (10^2) gives output: 8. How can this be? And what''s wrong?

your problem is the ^ operator, is doesn''t square.

10 is binary 1010
2 is binary 0010...
8 is binary 1000

found any pattern?


^ is logical XOR operator.

What operator is square then?
^ is normally used as square.

ten in binary 1010
two in binary 0010
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xor''ed binary 1000 = eight
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quote:

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Original post by peter86
What operator is square then?
^ is normally used as square.

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10 * 10 

quote:

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^ is normally used as square

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er... 'normally' isn't how computer languages work.

c++ only has division, muliplication, modulo, addition, subtraction as part of the language.

the maths libraries are used for trigonometric functions etc

so you #include <cmath> and use std:: pow to multiply a number up by a power



Do you not have a good reference manual for c/c++? You have often asked questions about basic syntax, keywords and concepts. Most people will look them up themselves.

If you don't have money for books then bookmark these links - they'll open in new windows.
c++ faq
thinking in c plus plus book
Also if you are using MSVC++ it comes with documentation. Click Help->Contents and type '^'.

[edited by - petewood on January 6, 2003 7:07:20 AM]