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 low=0,up=n-1,mid;

    while(low<=up)
    {
        mid=(low+up)/2;

        if(arr[mid]<key)
        {
            low=mid+1;
        }
        else if(arr[mid]>key)
        {
            up=mid-1;
            
        }
        else{
            return mid;
        }
    }
    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