Find Top 3 Largest Values in an Array

Code

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

void find_top_3(uint8_t *arr, uint8_t n) {
    uint8_t a,b,c;
    a=b=c=NULL;
    for(int i=0;i<n;i++){
        if(arr[i]>a){c=b;
        b=a;
        a=arr[i];}
        else if(arr[i]>b){
            c=b;
            b=arr[i];
        }
        else if(arr[i]>c){
            c=arr[i];
        }
    }
    if(n==1)printf("%d",a);
    else if(n==2)printf("%d %d",a,b);
    else printf("%d %d %d",a,b,c);
}

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

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

    find_top_3(arr, n);
    return 0;
}

Solving Approach