Tower of Hanoi
Tower of Hanoi program, show the steps for rings moving.
Download: hanoi.c

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Time Convert
Convert unix timestamp to format date.
Download: time_convert.c

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CPU Speed
A simple CPU benchmark program.
P.S. I tested on PIII 866 + 256MB ram (CentOS 4.1) system with 9.25 seconds, and 2.3 seconds for P4 3.0GHz + 1 GB ram (FreeBSD 5.1) system.
Download: cpu_speed.c

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Generate Password
Generate a password for user assign words.
Download: gen_passwd.c

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Crypt
Return an encrypted unix password with DES encryption algorithm.
Download: crypt.c

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Investment Calculator
A investment calculator to get how much profit for your investment.
Download: invest_calc.c