Keep Only the Highest Set Bit

Code

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

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    // Your logic here
    int i=0,j=0;
    if(reg==0)
    return 0;
    for(int i=0;i<32;i++)
    {
        if((reg>>i)&1)
        j=i;
    }
    return pow(2,j);
}

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

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

Solving Approach