c++程序，急！！

#include <iostream>
#include<ctime>

using namespace std;
int main()
{
srand((unsigned)time(NULL));
for (int i=0; i!=5; ++i) {
cout<<rand()%70+1<<endl;
}
return 0;
}

//---------------------------------------------------------------------------
#include <iostream>
#include <cstdlib>

using namespace std;
int main(void)
{
srand(time(NULL));
for (int i=0; i<5; i++) {
cout<<rand()%70+1<<endl;
}
return 0;
}
//---------------------------------------------------------------------------