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 i=0,mask=0,temp=-1;
    for(i=0;i<16;i++)
    {
        if(reg&(1<<i))
        {
            temp=i;
        }
    }

    if(temp>=0)
    {
        mask = (1<<temp);
        reg &= mask;
        return reg;
    }
    
    return 0;
}

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

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

Solving Approach