Binary Search in Sorted Array

Code

#include <stdio.h>
#include <stdint.h>

int binary_search(uint8_t *arr, uint8_t n, uint8_t key) {
    // Your logic here
    int start = 0;
    int end = n-1;
    int mid = -1;
    while(start <= end)
    {
        mid = start + (end - start)/2;

        if(arr[mid] == key)
        {
            return mid;
        }
        else if(arr[mid] < key)
        {
            start = mid + 1;
        }
        else
        {
            end = mid -1;
        }

    }

    return -1;
}

int main() {
    uint8_t n, key;
    scanf("%hhu", &n);
    uint8_t arr[100];

    for (uint8_t i = 0; i < n; i++) {
        scanf("%hhu", &arr[i]);
    }
    scanf("%hhu", &key);

    int index = binary_search(arr, n, key);
    printf("%d", index);
    return 0;
}

Solving Approach