You will need to write a number of functions that cannot use loops. instead use the generic algorithms to accomplish each function's task. to this end, you code must not have the word "for" or "while" anywhere in the solution.

functions:

write a function named "product", that takes a constant reference to a vector of ints and returns the multiplicative product of all the ints.
write a function called "positivesum", that takes a constant reference to a vector of ints and returns the sum of all the positive values in the vector.
write a function called "onlyover9000", that takes a reference to a vector of ints and removes any elements that aren't "over 9000".
write a function, named "onlyuppercase", that takes a constant reference to a vector of strings and outputs a single string composed entirely of capital letters. only the strings in the vector that are solely composed of uppercase letters should be included in the output.