3) Given the following declarations for parts a-d (assume that all variables have values, although we do not know what they are!) int x, credits; int vals [50]; double nums [4][6]; a) (8 points) Write C++ statement(s) that continually prompts the user to enter an even integral value into x and then outputs the value of x. The prompting stops when the user finally enters an odd value. Hinclude b) (8 points) Write the C++ statements that will print out all numbers in the array vals th are negative. include