Create object of unknown class (two inherited classes)
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by Paul
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Published on 2010-04-27T16:45:30Z
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2010/04/27
16:53 UTC
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I've got the following classes:
class A {
void commonFunction() = 0;
}
class Aa: public A {
//Some stuff...
}
class Ab: public A {
//Some stuff...
}
Depending on user input I want to create an object of either Aa or Ab. My imidiate thought was this:
A object;
if (/*Test*/) {
Aa object;
} else {
Ab object;
}
But the compiler gives me:
error: cannot declare variable ‘object’ to be of abstract type ‘A’
because the following virtual functions are pure within ‘A’:
//The functions...
Is there a good way to solve this?
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