Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    int count = 0;
   for(int i=31;i>=0;i--)
   {
     if(n & (1 << i))
     {
        count++;
     }
   }
   return count;
}

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

Solving Approach