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what does time(NULL) and srandom(time(NULL)) do in c ?

Edited by TrustyTony because: Moved to C forum
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Answered by TrustyTony 888 in a post from

What part of Computer Science your question is, looks like you posted C code here? I transfer your post to correct forum.

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What part of Computer Science your question is, looks like you posted C code here? I transfer your post to correct forum.

Edited by TrustyTony
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time gives the time in seconds. Feeding that to srandom seeds the pseudo random number generator based on the time of day.

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<pedantic>
Not time of day, number of seconds since the epoch passed so you get a different seed every time (as long as you don't manage to seed your PRNG twice with-in 1 second).
</pedantic>

Edited by Banfa
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