Check if K-th Bit is Set

Code

#include <stdio.h>

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

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

Solving Approach

• Input: Read N and K.
• Create mask: mask = 1 << K
• Check bit:
  • If (N & mask) != 0 → bit is 1
  • Else → bit is 0
• Output: Print 1 or 0