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#include #include #include // (a) Begin the definition of a function called find_query // which locates values from an array which lie within a small

#include #include #include

// (a) Begin the definition of a function called find_query // which locates values from an array which lie within a small // margin of error of a designated query value. Return the last // (greatest) index value for which this holds. // // Parameters: // values - an array of double precision floating point values. // num_vals - an int which specifies the number of items to process. // query - a double precision floating point value to locate. // tol - a small, strictly positive, double precision floating // point margin of error for equality comparisons. // // Returns: // An int indicating the location at which the query value may be found: // * If num_vals is 0: return -1 to record the fact that there is // no data to process. // * Otherwise: return i in 0 .. (num_vals-1) such that: // (fabs(values[i] - query) <= tol) AND // (For any j where fabs(values[j] - query) <= tol: j <= i) // i.e. // values[i] is approximately equal to query, and i is the "largest" index where // that happens.

INSERT RESULT TYPE, NAME, AND PARAMETERS HERE { // (b) Declare variable store index position, initially -1.

// (c) Iterate over array, counting from 0. { // (d) If item at current position is within +/- error of // the query, replace index with current position. }

// (e) Return index position. }

#define MAX_ITEMS (100)

int main(void) { double items[MAX_ITEMS]; int array_size; double query; double error;

// Get number of items. printf("Please enter number of items (up to %d) that will be processed: ", MAX_ITEMS); scanf("%d", &array_size);

// if number of items exceeds array size, restrict it to that value. if (array_size > MAX_ITEMS) { array_size = MAX_ITEMS; }

for (int i = 0; i < array_size; i++) { printf("Please enter (floating point) item %d of %d: ", (i + 1), array_size); scanf("%lf", &items[i]); }

printf("Please enter (floating point) query value: "); scanf("%lf", &query);

printf("Please enter (floating point) error margin: "); scanf("%lf", &error);

int result = find_query(items, array_size, query, error);

printf("The last approximate match to the query is at position %d. ", result);

return 0; }

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