Question

To perform stream i/o with disk files in c++ you should mcq

Answer 1

Answer:

The “unary operator” type of returns the object if the operand value is Null. EXPLANATION: In the expression a+b=c, a and b are operators, + and = are operators and c is the result.

Answer 2

Answer:

A function defined (naturally or artificially) on an interval [a,b] or [a,infinity) cannot be differentiable at a because that requires a limit to exist at a which requires the function to be defined on an open interval about a. ... So for instance you can use Rolle's theorem for the square root function on [0,1].