C++ Interview Questions and Answers
Ques: 1 can derived clss exception also be caught by the catch block?
Ans:
No
Ques: 2 What Is a B-Tree?
Ans:Read More
The B-tree was invented in 1972 by R. Bayer and E. McCreight, and was designed from the start to create shallow trees for fast disk access. Shallow trees have few �levels�, We have to seek through them fewer times, and therefore they run quickly. Because seeks often require going to disk for the information we need, The performance increase with a shallow tree rather than a deeper
C++ Interview Questions and Answers: A Comprehensive Guide
C++ Interview Questions and Answers
Basic Concepts
Ques: 1 Can derived class exceptions also be caught by the catch block?
Ans:
No
Ques: 2 What Is a B-Tree?
Ans:
The B-tree was invented in 1972 by R. Bayer and E. McCreight and was designed from the start to create shallow trees for fast disk access. Shallow trees have few “levels”. We have to seek through them fewer times, and therefore they run quickly. Because seeks often require going to disk for the information we need, the performance increase
Read MoreSafe Handling of Hand Tools in Maintenance and Educational Settings
1. HAND TOOLS
The manipulation of common hand tools like hammers, screwdrivers, pliers, clamps, and various keys is common practice in maintenance workshops and laboratories and classrooms of educational practices, such as the Faculty of Fine Arts, because many of the operations performed in such places can only be done manually.
Although at first glance, such tools can seem a bit dangerous when used improperly to cause significant injury (wounds and bruises, mainly) that on an occasional basis are
Read MoreOperator Overloading in C++: A Comprehensive Guide
Chapter 14: Operator Overloading in C++
Chapter Objectives
After completing this chapter, you should be able to:
- Understand the concept of operator overloading.
The Need for Operator Overloading
Let’s revisit the clockType class from Chapter 11. Consider the following code snippet:
clockType noon(12, 0, 0);clockType classTime(11, 30, 0);noon.printTime();classTime.incrementSeconds();if (noon.equalTime(classTime)) { cout << "The times are equal" << endl;}These statements work as intended,
Read MoreElectronic Ignition Systems: Types and Advantages
Electronic Ignition Systems
Findings
First, clean and adjust the spark plugs. Clean the high-tension wires, distributor cap, and coil. Check the spark plugs while the engine is running. Connect a voltmeter to the positive terminal of the coil; it should show the same voltage as the battery. Verify that impulses are reaching the module by connecting an AC voltmeter. Check the pulse generated by the coil with an ohmmeter connected at both ends; it should indicate a resistance value. Test continuity.
Read MoreSQL Server Interview Questions and Answers
Ques: 1 How to eliminate duplicate rows in a table?
Ans:
Use a primary key if the column is like ID or number. Alternatively, you can apply a unique constraint on the column.
Ans:
Deletion of duplicate records:
delete from emp a where a.rowid > (select min(b.rowid) from emp b where a.rowid=b.rowid)
or
delete from table t1 where t1.rowid
Ques: 2 What is the use of the ‘in’ command?
Ans:
Suppose you want to choose a specific department, then you can use the ‘in’ command.
Example:
select ename,sal from emp