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Chapter 11 Answers to Selected Exercises 2. [was #2] (e), (f), and (i) are legal. (a) is illegal because p is a pointer to an integer and i is an integer. (b) is illegal because *p is an integer and &i is a pointer to an integer. (c) is illegal because &p is a pointer to a pointer to an integer and q is a pointer to an integer. (d) is illegal for reasons similar to (c). (g) is illegal because p is a pointer to an integer and *q is an integer. (h) is illegal because *p is an integer and q is a pointer to an integer. 4. [was #4; modified] void swap(int *p, int *q) { int temp; temp = *p; *p = *q; *q = temp; } 6. [was #6] void find_two_largest(int a[], int n, int *largest, int *second_largest) { int i; if (a[0] > a[1]) { *largest = a[0]; *second_largest = a[1]; } else { *largest = a[1]; *second_largest = a[0]; } for (i = 2; i < n; i++) if (a[i] > *largest) { *second_largest = *largest; *largest = a[i]; } else if (a[i] > *second_largest) *second_largest = a[i]; } Copyright © 2008, 1996 W. W. Norton & Company, Inc. All rights reserved.

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