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Manual page for RAND(3C)

rand, srand - random number generator

SYNOPSIS

#include <stdlib.h>

void srand(int seed);

int rand(void);

DESCRIPTION

The newer random(3) should be used in new applications; rand remains for compatibility.

Rand uses a multiplicative congruential random number generator with period 232 to return successive pseudo-random numbers in the range from 0 to 231-1.

The generator is reinitialized by calling srand with 1 as argument. It can be set to a random starting point by calling srand with whatever you like as argument.

RETURN VALUE

The srand function returns no value. The rand function computes a sequence of psuedo-random integers.

SEE ALSO

random(3)

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