Question

I am trying to write a simple try/catch statement, but I keep on getting compiler errors. This is my code:

int divide(int x, int y)
{
    if (y == 0) {
        throw 0;
    }
    return x / y;
}

Exception::Exception()
{
    try {
        cout << divide(10, 0) << "\n"; 
    } catch (int e) {
        cout << "Cannot divide by " << e << "\n";
    } 
}

I am getting the following compiler errors:

LNK2019: unresolved external symbol “public: int_thiscall Exception::divide(int,int” (?divide@Exception@@QAEHH@Z) referenced in function “public:_thiscall Exception::Exception(void)”(??0Exception@@QAE@XZ)

LNK1120: 1 unresolved externals

Answer 1

My magic remote debugging skills tell me that divide is a member of Exception, but you’re defining it in the global namespace. Prefix divide with Exception::, a la

int Exception::divide(int x, int y)
{
    if (y == 0) {
        throw 0;
    }
    return x / y;
}