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