C++随机数

#include <iostream>
#include <ctime>
#include <cstdlib>

using namespace std;

int main () {
   int i,j;

   // set the seed
   srand( (unsigned)time( NulL ) );

   /* generate 10  random numbers. */
   for( i = 0; i < 10; i++ ) {
      // generate actual random number
      j = rand();
      cout <<" Random Number : " << j << endl;
   }

   return 0;
}