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binary-search.c
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binary-search.c
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#include <stdio.h>
int binary_search(int array[], int value, int size)
{
int found = 0;
int high = size, low = 0, mid;
mid = (high + low) / 2;
printf("\n\nLooking for %d\n", value);
while ((! found) && (high >= low))
{
printf("Low %d Mid %d High %d\n", low, mid, high);
if (value == array[mid])
found = 1;
else if (value < array[mid])
high = mid - 1;
else
low = mid + 1;
mid = (high + low) / 2;
}
return((found) ? mid: -1);
}
int main(void) {
int array[100], i;
for (i = 0; i < 100; i++)
array[i] = i;
printf("Result of search %d\n", binary_search(array, 33, 100));
printf("Result of search %d\n", binary_search(array, 75, 100));
printf("Result of search %d\n", binary_search(array, 1, 100));
printf("Result of search %d\n", binary_search(array, 1001, 100));
return 1;
}