Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    char bit;
    int cnt;
    for(int i = 0; i < sizeof(int)*8; i++){
        bit = (n >> i) & ~0xFE;
        if(bit) cnt++;
    }
    return cnt;
}

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