34. Count Set Bits in an 8-bit Register

#include <stdio.h>
#include <stdint.h>

uint8_t count_set_bits(uint8_t reg) {
    // Your code here
    int ct = 0;

    while (reg > 0){
        ct = (reg & 1) ? ct + 1 : ct;
        
        reg >>= 1;
        
    }
    return ct;
}

int main() {
    uint8_t reg;
    scanf("%hhu", &reg);
    printf("%u", count_set_bits(reg));
    return 0;
}