Compatibility summary
Your Netherlands plug may fit in Madagascar outlets, as both use at least one common plug type.
Plug comparison
Netherlands plug types: C F
Madagascar plug types: C E
Both countries share at least one plug type (C F and C E), so some plugs may work without an adapter. Check your appliance.
Voltage comparison
Netherlands: 230V, 50Hz
Madagascar: 230V, 50Hz
Voltage difference is within a range many devices tolerate; check your appliance label.