Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    // Your logic here
    if (reg == 0 ){
        return 0;
    }
    int pos=0;
    int count =0;
    while(count  < 16){
        reg = reg >> 1;
        count++;
        if(reg & 1){
            pos = count;
        }
        
    }
    reg =  (1 << pos);

    return reg;
}

int main() {
    uint16_t reg;
    scanf("%hu", &reg);

    uint16_t result = highest_set_bit(reg);
    printf("%hu", result);
    return 0;
}

Solving Approach