Page 98 - C++

void PRODUCT :: ModifyQty ( )

{

fstream Fil;

Fil.open (“PRODUCT.DAT” , ios : : binary | ios : : in | ios : : out);

int MPno;

cout<<“Product No to modify quantity :”; cin>>MPno;

while( Fil.read ((char*) this, sizeof (PRODUCT)))

{

if (MPno ==Pno)

{

cout<<“present quantity:” <<Qty<<endl;

cout<<“changed quantity:”; cin>>Qty;
int position = ________; //Statement 1

___________________; //Statement 2
Fil.write ((char*) this, sizeof (PRODUCT)); // Re-writing the Record

}
}

Fil.close( );

}

(b) Write a function in C++ to count the no. of “Me” or “My” words present in a text file “DIARY.TXT”. [2]

If the file “DIARY.TXT” content is as follows :

My first book was Me and My

family. It gave me chance to be known to the world.

The output of the function should be

Count of Me/ My in file : 4

(c) Write a function in C++ to search for a laptop from a binary file “LAPTOP.DAT” containing the objects of
class LAPTOP (as defined below). [3]

The user should enter the Model No and the function should search and display the details of the laptop.
class LAPTOP

{

long ModelNo;

float RAM, HDD;

char Details[120];