30. Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    int count =0;
    int size = sizeof(n);
    //printf("%d",size);
    
    while(n)
    {
      if( (n & 1U) == 1U)
      {
        count++;
      }
      n>>=1;
    }

    return count;


}

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