Write the definition for a void function called textToScreen that has one formal parameter called fileStream that is of type ifstream. The precondition and postcondition for the function are as...

Write the definition for a void function called textToScreen that has

one formal parameter called fileStream that is of type ifstream. The

precondition and postcondition for the function are as follows:

//Precondition: The stream fileStream has been connected

//to a file with a call to the member function open.

//Postcondition: The contents of the file connected to

//fileStream have been copied to the screen character by

//character, so that the screen output is the same as the

//contents of the text in the file.

//(This function does not close the file.)