Page 150 - C++

(e) Evaluate the following postfix expression using a stack. Show the contents of stack after execution
of each operation: [2]
TRUE, FALSE, TRUE, FALSE, NOT, OR, TRUE, OR, OR, AND
(f) Give the necessary declarations of a queue containing integers. Write a user defined function in C++
to delete an integer from the queue. The queue is to be implemented as a linked structure. [4]
4. (a) Differentiate between ifstream class and ofstream class. [2]
(b) Assuming the class STOCK, write functions in C++ to perform following: [4]
(i) Write the objects of STOCK to a binary file.
(ii) Read the objects of STOCK from binary file and display them on screen.
class STOCK
{
int ITNO;
char ITEM[10];
public :
void GETIT( )
{
cin>>ITNO;
gets(ITEM);
}
void SHOWIT( ){cout<<ITNO<< " "<<ITEM<<endl;}
};
(c) Consider the following class declaration: [4]
class employee
{
int code;
char name [20];
float salary;
public:
void input( ) {cin>>code>>name>>salary;}
void show( ) {cout<<code<<name<<salary<<endl;}
float retsal( ) {return salary;}
};
Give function definitions to do the following:
(i) Write the objects of employee to a binary file.
(ii) Read the objects of employee from a binary file and display all the objects on the screen where
salary is between ` 10,000 and ` 20,000.
5. (a) Differentiate between SQL commands DROP TABLE and DROP VIEW. [2]
Write SQL commands for (b) to (e) and write the outputs for (g) on the basis of table GRADUATE:
SNo Name Department Date of joining Salary (`) Sex
1. Raja Computer 21-05-98 8000 M
2. Sangita History 21-05-97 9000 F
3. Ritu Sociology 29-08-98 8000 F
4. Kumar Linguistics 13-06-96 10000 M
5. Venkatraman History 31-10-99 8000 M
6. Sidhu Computer 21-05-86 14000 M
7. Aishwarya Sociology 11-01-98 12000 F
Model Test Papers MTP.5