有没有真随机数？

我生成的伪随机数可以进入其它程序运算吗？

#include<stdio.h>
#include<math.h>
#include<stdlib.h>
#include<sys/types.h>
#include<sys/timeb.h>
随机程序如下：
void main(void)
{
    int i,k;
   double j     ;
    unsigned int seedVal;
    struct timeb timeBuf;
    ftime(&timeBuf);
    seedVal=((((unsigned int)timeBuf.time&0xFFFF)+
         (unsigned int)timeBuf.millitm)^
         (unsigned int)timeBuf.millitm);
    srand((unsigned int)seedVal);
    i=rand()%100;
    j=i/1000.0;
     printf("%f\n",j);
}



也就是说这样可以是吧
#include<stdio.h>
#include<math.h>
#include<stdlib.h>
#include<sys/types.h>
#include<sys/timeb.h>

void main(void)
{
    int i,k;
   double j     ;
    unsigned int seedVal;
    struct timeb timeBuf;
    ftime(&timeBuf);
    seedVal=((((unsigned int)timeBuf.time&0xFFFF)+
         (unsigned int)timeBuf.millitm)^
         (unsigned int)timeBuf.millitm);
    srand((unsigned int)seedVal);
    i=rand()%100;
    j=i/1000.0;
     这里接其它C程序；
}