p.317 #5
a. if(input_file.is_open())
{
	...
}
b. input_file >> lname[num_records] >> id[num_records] >> age;
	while(!input_file.eof())
	{
		num_records++;
		input_file >> lname[num_records] >> id[num_records] >> age;
	}
c. input_file.close();

#6
a. False
b. True
c. True
d. True
e. True