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 max =0;
for(int n =0;n<16;n++){
   
    if(reg & (1<<n))// to check n bit set 
     
      if(max <n) max =n; //update the max with set bit position
      else max =max;
    

}
   if (reg ==0 ) return reg;
   else
    reg = reg&0x0000;
    reg =reg| (1<<max);
    return reg;
}

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

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

Solving Approach