Linear Search in Array

Code

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

int linear_search(uint8_t *arr, uint8_t n, uint8_t key) {
    // Your logic here
    int i,c=0,j;
    for(i=0;i<n;i++)
    {
        if(arr[i]==key)
        {
            j=i;
        c++;
        }
    }
    if(c>1)
    return 0;
    else if (c==1)
    return j;
    else
    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 = linear_search(arr, n, key);
    printf("%d", index);
    return 0;
}

Solving Approach

 int i,c=0,j;
    for(i=0;i<n;i++)
    {
        if(arr[i]==key)
        {
            j=i;
        c++;
        }
    }
    if(c>1)
    return 0;
    else if (c==1)
    return j;
    else
    return -1;