How to Catch a Specific Exception in C++?
In C++, exceptions are runtime anomalies or abnormal conditions that a program encounters during its execution. The process of handling these exceptions is called exception handling. In this article, we will learn how we can catch specific exceptions in C++.
Catch a Specific Exception in C++
In C++, the exception handling is done using try-catch statements. The basic syntax of the try-catch method is:
try { // Code that might throw an exception throw SomeExceptionType("Error message"); } catch( SomeExceptionType e1 ) { // catch block catches the exception that is thrown from try block }
To catch an exception of a specific type that is thrown in the try block, we have to mention its type in the catch block along with some name assigned to it.
C++ Program to Catch a Specific Exception
In this program, we will catch the divide-by-zero exception using the try-catch blocks.
C++
// C++ program to catch divide by zero exception #include <iostream> #include <stdexcept> using namespace std; int main() { int x = 5; int y = 0; // write the code that may throw an exception try { if (y == 0) { // throw error throw runtime_error( "Divide by zero error" ); } int z = x / y; cout << "Result: " << z << endl; } // catch the specific exception catch ( const runtime_error& e) { cout << "Exception Caught: " << e.what() << endl; } return 0; } |
Output
Exception Caught: Divide by zero error
Time Complexity: O(1)
Auxiliary Space: O(1)
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