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
   
    uint16_t value  = 0;
    for( int idx = 15; idx >= 0 ; idx-- )
    {
        value = (1 << idx ) & reg;

        if( value )
        {
            return value;
        }

    }

    return reg ;
}

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

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

Solving Approach