#define RANDOM_MAX 0x7FFFFFFFstatic long my_do_rand(unsigned long *value){/*   */   long quotient, remainder, t;    quotient = *value / 127773L;   remainder = *value % 127773L;   t = 16807L * remainder - 2836L * quotient;    if (t <= 0)      t += 0x7FFFFFFFL;  return ((*value = t) % ((unsigned long)RANDOM_MAX + 1));}static unsigned long next = 1;int my_rand(void){   return my_do_rand(&next);}void my_srand(unsigned int seed){   next = seed;}#include <time.h>int main(){   int i;     my_srand((unsigned)(time(NULL)));   for(i=0;i<100;i++)   {      if(i % 10 == 0)         printf("\n");      printf("%d\t",my_rand());   }   return 0;}