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# C++ Exception Handling Exceptions are problems that arise during the execution of a program. C++ exceptions are special situations that occur during program runtime, such as attempting to divide by zero. Exceptions provide a way to transfer control of the program. C++ exception handling involves three keywords: **try, catch, throw**. * **throw:** When a problem occurs, the program throws an exception. This is done using the **throw** keyword. * **catch:** Where you want to handle the problem, you catch the exception with an exception handler. The **catch** keyword is used to catch exceptions. * **try:** The **try** block identifies a block of code for which particular exceptions will be activated. It is followed by one or more catch blocks. If a block throws an exception, the method to catch the exception uses the **try** and **catch** keywords. Code that might throw an exception is placed in the try block, and the code in the try block is called protected code. The syntax for using try/catch is as follows: try{// Protected code}catch(ExceptionName e1){// catch block}catch(ExceptionName e2){// catch block}catch(ExceptionName eN){// catch block} If the **try** block can throw different exceptions in different scenarios, you can list multiple **catch** statements to catch different types of exceptions. ## Throwing Exceptions You can throw an exception from anywhere in a code block using the **throw** statement. The operand of the throw statement can be any expression, and the type of the expression's result determines the type of exception thrown. Here is an example of throwing an exception when attempting to divide by zero: double division(int a, int b){if(b == 0){throw"Division by zero condition!"; }return(a/b); } ## Catching Exceptions A **catch** block follows a **try** block and is used to catch exceptions. You can specify what type of exception you want to catch, which is determined by the exception declaration in the parentheses after the catch keyword. try{// Protected code}catch(ExceptionName e){// Code to handle ExceptionName exception} The above code will catch an exception of type **ExceptionName**. If you want the catch block to handle any type of exception thrown by the try block, you must use the ellipsis ... inside the parentheses of the exception declaration, as shown below: try{// Protected code}catch(...){