C# 12 Pocket Reference by Joseph Albahari

Author:Joseph Albahari
Language: eng
Format: mobi, epub
Publisher: O'Reilly Media
Published: 2023-10-27T00:00:00+00:00

Consider the following code:

int x = 3, y = 0;

Console.WriteLine (x / y);

Because y is zero, the runtime throws a DivideByZeroException and our program terminates. We can prevent this by catching the exception as follows:

try

{

int x = 3, y = 0;

Console.WriteLine (x / y);

}

catch (DivideByZeroException)

{

Console.Write ("y cannot be zero. ");

}

// Execution resumes here after exception...

NOTE

This is a simple example to illustrate exception handling. We could deal with this particular scenario better in practice by checking explicitly for the divisor being zero before calling Calc.

Exceptions are relatively expensive to handle, taking hundreds of clock cycles.

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