C++ | Exception Handling | Question 12

What happens when a function throws an error but doesn’t specify it in the list of exceptions it can throw.

For example, what is the output of following program?

#include <iostream> 
using namespace std; 
  
// Ideally it should have been "int fun() (int)" 
int fun() 
{ 
    throw 10; 
} 
  
int main() 
{ 
    try
    { 
        fun(); 
    } 
    catch (int ) 
    { 
        cout << "Caught"; 
    } 
    return 0; 
} 

(A) Compiler Error
(B) No compiler Error. Output is “Caught”

Answer: (B)

Explanation: C++ compiler doesn’t check enforce a function to list the exceptions that it can throw. In Java, it is enforced.

It is up to the programmer to specify. Being a civilized programmer, a programmer should specify the list.

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