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
    // Input:  2C        // Binary: 000000000010 1100  
    // Output: 20        // Binary: 000000000010 0000
    uint16_t temp = 0;
    for(int i = 0; i < 16; i++)
    {
       if(( reg >> (16-1) - i ) & 0x1)
       {
        temp = (1 << (16-1) - i );
        return temp;
       }

    }

    return 0;
}

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

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

Solving Approach