Check if K-th Bit is Set

Code

#include <stdio.h>

int isKthBitSet(int n, int k) {
    // Check if k-th bit (0-based) is set in n
    if (n & (1 << k))
        return 1;   // bit is set
    else
        return 0;   // bit is not set
}

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

Solving Approach