30. Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    int number_of_setbits = 0;
    for(int i = 0;i<32;i++)
    {
       if((n>>i)&1)
        number_of_setbits++;
    }
    return number_of_setbits;
}

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