In C++, how to read a number with decimal in input file and write that decimal number in output file. for example, in input file, it says

Please answer in C++

In the code segment             Double radius = 4.5;             Const double* ptr = & radius;The ptr is constant, but the data pointed to by the pointer ptr is not constant options:   True   False

In C++, a pointer variable is a special kind of data storage. Do you know how to put it to use?

It’s due in C++ Please tell me which code is for StudentMaim.c and which for studentInfo.h and studentInfo.c

You are required to write a program that creates a mini database of HairColor objects..... For this, create a structure HairColor with fields brand – string color - string price - float totalVolume – float currentVolume – float // amount of volume currently available. You need to provide following functions in the struct   Provide a function print() so that when called, this function prints the details about the Hair color in formatted manner. IsAvailable(String Technique) which checks the volume of color in the bottle if available for the required technique then returns true otherwise false. isEmpty() this will check whether the bottle is empty or not. You need to provide the function apply (String technique). This function represents the action of applying hair color to hair based on technique user selects Techniques are (highlight, Bronde, Ombre, Sombre) also note down please check that the color is available because volume required for each type of technique is different as for…