Question

14.3 Assume that each of the following statements applies to the same program. a) Write a statement that opens file oldmast.dat for input; use an ifstream object called inoldMaster. b) Write a statement that opens file trans.dat for input; use an ifstream object called inTransaction. c) Write a statement that opens file newmast.dat for output (and creation); use ofstream object outNewmaster. d) Write a statement that reads a record from the file oldmast.dat. The record consists of integer account Number, string name (containing spaces) and floating-point currentBal- ance. Use ifstream object inoldMaster. e) Write a statement that reads a record from the file trans.dat. The record consists of in- teger accountNum and floating-point dollarAmount. Use i fstream object inTransaction. f) Write a statement that writes a record to the file newmast.dat. The record consists of integer accountNum, string name, and floating-point currentBalance. Use ofstream ob- ject outNewMaster.

Answer 1

If you have any doubts, please give me comment....

a)

ifstream inOldMaster.open("oldmast.dat");

b)

ifstream inTransaction.open("trans.dat");

c)

ofstream outNewMaster.open("newmast.dat");

d)

inOldMaster>>accountNumber;

inOldMaster.clear();

inOldMaster.ignore(4096, '\n');

getline(inOldMaster, name);

inOldMaster>>currentBalnce;

e)

inTransaction>>accountNum>>dollarAmount;

f)

outNewMaster<<accountNum<<endl;

outNewMaster<<name<<endl;

outNewMaster<<currentBalance<<endl;