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
    uint16_t temp=0;
    for(uint16_t i=0; i<16;i++){
        if(reg & (1<<i)) temp=i; //Check bit 1 consecutively until get the leftmost one
    }
    reg &= 1<<temp; // mask the reg and keep the highest bit 1
    return reg;
}

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

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

Solving Approach