Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    int bits = sizeof(n) * 8;
    int setBits = 0;

    for (int i = 0; i < bits; i++) {
        if (n & (1 << i)) {
            setBits++;
        }
    }

    return setBits;
}

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

Solving Approach