#include<fstream.h>
#include<iostream.h>
void main()
{
fstream infile,outfile;
long d_d[33]={1,2,3};
outfile.open("c:\\d.txt",ios::out|ios::binary);
for(i=0;i<33;i++)
{

outfile.write((char*)&d_d[i],sizeof(d_d[i]));
}
outfile.close();
infile.open("c:\\d.txt",ios::in |ios::binary);
for(i=0;i<33;i++)
{
infile.read((char*)&d_d[i],sizeof(d_d[i]));
cout<<d_d[i];
}
infile.close();
}

#include<fstream>

long buff[300] ;
std::ifstream infile(.., std::ios::binary) ;

infile.read((char*)buff, buff*sizeof(long)) ;