Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    
    unsigned int i;
    unsigned int count;

    for (i = 0; i < sizeof(unsigned int)*8; i++)
    {
        if (n & (1 << i))
            count++;
    }

    return count;
}

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

Solving Approach