Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    int j=0;
    for(int i=0;i<32;i++){
        if(n&1)
        {
            j++;
        }
        n >>= 1; 
    }
    return j;
}

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