6. (a) (6%) You are given the following code. void foo (int w, int x, int...
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6. (a) (6%) You are given the following code. void foo (int w, int x, int y, int z) { } W = 11; x = 12; y = 13; z = Z * 2 ; int main() { int a = 1, b = 2, c = 3; foo (a, b, b, 2 * c); Suppose formal parameters w, x, y, and z are passed by value, by result, by value- result, and by reference respectively. There exists some problem(s) in the above code regarding parameter passing. Identify and describe all of them. (b) (5%) Give a concrete scenerio of writing a subprogram in which static local variables should be used. Your answer should describe the semantics of your subprogram and provide justification of the need to use static local variables. Your answer should not be related to time and space efficiency. 6. (a) (6%) You are given the following code. void foo (int w, int x, int y, int z) { } W = 11; x = 12; y = 13; z = Z * 2 ; int main() { int a = 1, b = 2, c = 3; foo (a, b, b, 2 * c); Suppose formal parameters w, x, y, and z are passed by value, by result, by value- result, and by reference respectively. There exists some problem(s) in the above code regarding parameter passing. Identify and describe all of them. (b) (5%) Give a concrete scenerio of writing a subprogram in which static local variables should be used. Your answer should describe the semantics of your subprogram and provide justification of the need to use static local variables. Your answer should not be related to time and space efficiency.
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Computer Systems A Programmers Perspective
ISBN: 9781292101767
3rd Global Edition
Authors: Randal E. Bryant, David R. O'Hallaron
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