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 n=0;
    for(int i=0;i<16;i++){
        if(reg & (1<<i)){
            if(i>=n){
                n=i;
            }
        }
    }
    for(int m=0;m<16;m++){
        if(m!=n){
          reg &= ~(1 << m);  
        }
    }
    return reg;
}

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

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

Solving Approach