30. Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    unsigned int count=0;
    while(n)
    {
         n & 1 ? count++:0;
        // n >>= 1;
        // if(n & 1)
        // {
        //     count++;
        // }
        n = n >>1;
    }
    return count;
}

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