隨機

#include <stdlib.h>
#include <stdio.h>
#include <time.h>

unsigned int MyRand(int base)
{
 unsigned int RandNum = 0 , i=0;
 srand(time(NULL) + rand());
 
 while(i<20){
  RandNum = rand()%base;
  printf("rand_%d:%d\n",i,RandNum);
  i++;
 }
 return RandNum;
}

int main(void)
{
 MyRand(1000);
 return 0;
}