Hi! I'm fairly new to the area C + +. Now I want to find out what Pointer / pointers. Google I've searched, but unfortunately I will not follow particularly smart. Can someone explain to me what are pointers? And another question: D I want to grad a tool to calculate means of PQ, or for the Bayern ABC formula writing, but unfortunately it does not work with decimal numbers and negative numbers. How do I declare the variables? Insulted me as a quiet noob or a beginner, but I'm grateful for any help!