30. Count Set Bits in an Integer

#include <stdio.h>
int m=0;
int countSetBits(unsigned int n) {
   for(int i =0; i <= 31;i++)
   {
    if(((n &(1<<i)) >> i))
    {
        m++;
    }
   }
   return m;


}

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