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
    uint8_t max=0;
    for(int i=0;i<16;i++){
        if(reg & (1<<i)){
            max = i;
        }
    }
    uint16_t temp_reg=0;
    if(max != 0){
        temp_reg |= (1<<max);
    }
    return temp_reg;
}

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

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

Solving Approach