NAME

rand, srand − random number generator

SYNOPSIS

srand(seed)
int seed;

rand()

DESCRIPTION

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

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. 

SEE ALSO

random(3)

7th Edition  —  Revision 1.2 of 19/10/88