#include #pragma warning(disable : 4996) // needed in VS

// CSE 240 Spring 2021 Homework 2 Question 3 (25 points) // Note: You may notice some warnings when you compile in GCC or VS, that is okay.

#define ABS(x) (((x) < 0) ? -(x) : (x))

#define polyMacro(a, b) (a*a + 5*a- 4*a*b + b*b)

int polyFunc(int a, int b) { return (a * a + 5 * a - 4 * a * b + b * b); }

// Part 1: // We want to pass the value of 6 to ABS and expect the result of ABS to be 6, why is the result 7? Correct the error (5 points) void part1(int x) {

int result; result = ABS(++x);

printf("absm(6) = %d ", result);

// Why did this error occur? Please provide the answer in your own words below. printf("Explanation: ________ "); // (2.5 points) }

// Part 2: // We want to pass incremented values of x and y to the macro and function to compare their outputs in VS and GCC. // Run this program in Visual Studio(VS) and then again in GCC. Fill the blanks below with the output values for polyFunc and polyMacro. // Then correct/edit this function so that polyFun and polyMacro produce same correct output of 22. // (5 points) // void part2(int x, int y) { // increment before passing to macro int x_copy = x, y_copy = y;

printf("polyFunc(x, y) = %d polyMacro(x, y) = %d ", polyFunc(++x, ++y), polyMacro(++x_copy, ++y_copy));

// Replace the 4 blank spaces below with the actual output observed when running the code in VS and GCC. // The blanks should have the answers of unedited program. Keep the answers in blanks as they were, after editing the program. printf("In VS : the result of polyFunc = __ and polyMacro = __ "); // (5 points) printf("In GCC: the result of polyFunc = __ and polyMacro = __ "); // (5 points)

// Explain in a short sentence why VS and GCC could possibly produce a different value for the same program and for the same input. printf("Explanation: ___ "); // (2.5 points) }

// Do not edit main() int main() { int x = 5, y = 1;

printf("Part 1: "); part1(x); printf("Part 2: "); part2(x, y);

while (1); // needed to keep console open in VS return 0; }