Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    int cnt = 0;
    for(int i = 31; i >= 0; i--)
    {
       if(n & (1 << i))
       {
        cnt++;
       }
    }
    return cnt;
    // Write your code here
}

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

Solving Approach