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c++macosexceptionterminalthrow

Exception in c++ not showing throw to cout

#include <iostream>

int main()
{
int num = 1;

try
{
    if (num != 0)
    {
        throw "num is not 0!";
    }
}
catch (char *x)
{
    cout << x << endl;
}
}

I want this code to print "num is not 0!" to cout but when i run it i get libc++abi.dylib: terminating with uncaught exception of type char const* Abort trap: 6 as output from the terminal. Am I misunderstanding how exceptions work or is there some other problem?

Solution

  • This is because you throw a string literal and it cannot be bound to char*. Rather it can be bound to char const*.

    Pedantically, the type of "num is not 0!" is char const[14], however, in throw expression the array decays to a pointer to its first element.