30. Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    int numOfSetBits = 0;

    for(int i = 0; i <= 31; i++)
    {
        if(n & (1 << i))
        {
            numOfSetBits++;
        }
    }

    return numOfSetBits;
}

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