程序出错：The variable 'y' is being used without being initialize

程序出错：The variable 'y' is being used without being initialize the variable'discount' is being used without being initializ The variable 'sele' is being used without being initialized. C++运行问题：The variable 'Data' is being used without being init varible is being used without being initialized ,Run-Time Check Failure #3 - The variable 'L' is being used Run-Time Check Failure #3 - The variable 'r' is being used w The username chosen is already being used. without being the key is already being used by another computer The computer being used by them is very fast. This is his only request that the room___after being used.