Linear congruential generator c.f. http://en.wikipedia.org/wiki/Linear_congruential_generator

lcg.c

#include <stdio.h>

int lcg() {
    static int seed = 8;
    seed = (1664525 * seed + 1013904223) & 2147483647;
    return seed;
}

int
main() {
    int i;

    for (i = 0; i < 300; i++) {
        printf("%d ", lcg());
    }

    return 0;
}