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Random generation of username and password

I want to randomly generate an username and password each of size 20 using c.how do i go about it ...
vinu020500Asked:
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AlexVirochovskyCommented:
You can simple produce random number,
get RundomN%30 +'a' for example(random symbol) amd  make it 20 times!
There are many random generators:
http://www.snippets.org/rand1.c
http://www.snippets.org/rand2.C
http://www.math.keio.ac.jp/~matumoto/emt.html 
or standart rand() function...
I hope, it helps. Alex  
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ozoCommented:
You may want to be careful that the random username and random password are independently seeded, or someone other than the user could be able to deduce the password that goes with a given username.
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