Standard C Libraries
bsearch (Continued)
Example:
#include <stdlib.h> /* for bsearch, qsort */
#include <stdio.h> /* for printf, sizeof */
#define NUM 7
int comp(const void *e1, const void *e2);
int main(void)
{
int list[NUM] = {35, 47, 63, 25, 93, 16, 52};
int x, y;
int *r;
qsort(list, NUM, sizeof(int), comp);
printf("Sorted List: ");
for (x = 0; x < NUM; x++)
printf("%d ", list[x]);
y = 25;
r = bsearch(&y, list, NUM, sizeof(int), comp);
if (r)
printf("\nThe value %d was found\n", y);
else
printf("\nThe value %d was not found\n", y);
y = 75;
r = bsearch(&y, list, NUM, sizeof(int), comp);
if (r)
printf("\nThe value %d was found\n", y);
else
printf("\nThe value %d was not found\n", y);
}
int comp(const void *e1, const void *e2)
{
const int * a1 = e1;
const int * a2 = e2;
if (*a1 < *a2)
return -1;
else if (*a1 == *a2)
return 0;
else
return 1;
}
Output:
Sorted List: 16 25 35
47
52
63
93
The value 25 was found
The value 75 was not found
? 2008 Microchip Technology Inc.
DS51456E-page 97
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