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canMakeSum

Language/Type: C++ recursion backtracking
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Write a recursive function named canMakeSum that accepts a reference to a vector of integers and a target integer as parameters and and returns true if it is possible to have some set of values from the vector that sum to the target value. For example, the vector {1, 1, 2, 3, 5} and target value 9 should return true because 5 + 3 + 1 = 9. However, the vector {1, 4, 5, 6} and target value 8 should return false.

Function: Write a C++ function as described, not a complete program.

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