#include <iostream>
struct car {
struct wheels {
int diameter;
int width;
};
struct engine {
int volume;
};
int x;
wheels w;
engine e;
car();
car(wheels w, engine e);
};
car::car() : x(1), w{1, 1}, e{0} {}
car::car(wheels w, engine e) : x(1), w(w), e(e) {}
int main() {
car c;
return 0;
}
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