ASK A QUESTION ¿qué tú hace?
¿qué tú hace?..........I assumes it means what are you doing when someone asks me that, but is it correct to ¿qué tú haciendo? or is 'qué tú hace ' correct if you're asking 'what are you doing? I thought we are supposed to use the progressive ending?
what are you doing? => ¿qué estás haciendo? you use another present tense. you are right
Welcome to the forum
We often use the present simple in this context:
¿Qué haces? What are you doing?
The structure given by you is unusual in Spain. Grammatically is is wrong, it should be:
¿Qué haces tú?