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 reg0 = 0, reg1 = 0;
    for(uint8_t i = 1; i <= 16; i++){
         
         if((reg  >> i) != 0){
          reg0 = reg & (1 << i);
         }
         else{
            return reg0;
         }
         }
    
}

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

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

Solving Approach