Keep Only the Highest Set Bit

Code

#include <stdio.h>
#include <stdint.h>

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    int count = 0,h=reg;
    for(int i=15;i>=0;i--)
    {
        h = reg&(1<<i);
        if(h!=0)
        {
            break;
        }
        count++;
    }
    int c = 15 - count;
    reg = reg & 0;
    reg = reg | (1<<c);
    return reg;
}

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

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

Solving Approach