30. Count Set Bits in an Integer

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

int countSetBits(unsigned int n) {
    // Write your code here
    int cnt = 0;
    for(uint8_t i = 0;i < 32;i++){
        if((n >> i) & 1)cnt++;
    } 
    return cnt;
}

int main() {
    int n;
    scanf("%d", &n);
    printf("%d", countSetBits(n));
    return 0;
}