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;
    }
    uint16_t i;
    for(i=15;i>=0;i--){
        if(reg & (1<<i)){
            for (uint16_t j=0;j<i;j++){
        reg &= ~(1<<j);
    }
    return reg;
        }
    }

    
}

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

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

Solving Approach