Question: 2. (2 points) Consider the following C++ program, where &i means i is passed by reference: int bar (int &i) { i = i -

2. (2 points) Consider the following C++ program, where &i means

2. (2 points) Consider the following C++ program, where &i means i is passed by reference: int bar (int &i) { i = i - 2; return 2 * i; void foo1 () { int x = 3, y = 6, sum; sum = x; sum = sum + bar(x); void foo2 () { int x = 2, y = 7, sum; sum = bar(x); sum = sum + x; (a) What is the value of sum at the end of the function fool? Briefly explain why. (b) What is the value of sum at the end of the function foo2? Briefly explain why

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