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++ 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;
} |
Exception Caught: Divide by zero error
Time Complexity: O(1)
Auxiliary Space: O(1)