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 reg_copy=reg;
    int n=0;
    for(int i=0; i<16; i++){
        if(reg_copy & (1<<i)){
            n=i;
        }
    }
    return reg &= (1<<n);
}

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

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

Solving Approach

Run a Loop to check if the nth bit is set and keep the record of highest set bit