Can you explain the principle of the try-catch construct in programming and what it is used for?

The try-catch construct in programming is used for exception handling — unexpected errors that may occur during program execution.

Principle of operation:

• Code that might cause an error is placed inside a try block.
• If an exception occurs in the try block, execution is interrupted and control is transferred to the corresponding catch block, where the error can be handled (for example, by displaying a message, logging, or performing alternative actions).
• If no exception occurs, the catch block is skipped.

This allows the program not to crash on errors, but to handle them properly and continue working or terminate correctly.

Example in C#:

try
{
    int result = 10 / divisor; // may cause division by zero
    Console.WriteLine(result);
}
catch (DivideByZeroException ex)
{
    Console.WriteLine("Error: division by zero.");
}

In this example, if divisor is zero, the program will not crash but will display an error message.