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
    int pos = 0;
    int set_pos = 0;
    for (pos ; pos<16 ; pos++){
        if (reg & (1<<pos)){
            set_pos=pos;
        } 
    }
    return reg &= (1<<(set_pos));
}

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

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

Solving Approach