Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    int count = 0;
    while(n!=0)
    {
        if(n&1==1)
        {
            count++;
        }
        n>>=1;
    }
    return count;
}

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

Solving Approach

perform & with 1, every bit use >> to access every bit
if result of & i s 1 increase count until given number is 0 
finally return count.