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THE UNIVERSITY OF WESTERN ONTARIO DEPARTMENT OF COMPUTER SCIENCE LONDON CANADA Software Tools and

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The University of Western Ontario

Department of Computer Science

London, Canada

Software Tools and Systems Programming (Computer Science 2211A)

LAB7

The week of October 22 – October 28, 2023

This lab is an exercise with pointer arithmetic. Question 2 of the lab exercise is taken from exercise 17 in Chapter 12 of our textbook: C Programming Language: A Modern Approach (Second Edition), by K. N. King.

1. Rewrite the following function to use pointer arithmetic instead of array subscripting. (In other words, eliminate the variables i and all of the [] operators.) Note that for any array a, the expression a[i] is equivalent to *(a+i).

int sum_array(const int a[], int n)

{

int i, sum = 0;

for (i = 0; i < n; i++)

sum += a[i];

return sum;

}

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