3. Check if K-th Bit is Set

Code

#include <stdio.h>

int isKthBitSet(int n, int k) {
    n = n&(1<<k);
    if ( n ) return 1; 
    return 0;
}

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