Check if K-th Bit is Set

Code

#include <stdio.h>

int isKthBitSet(int n, int k) {
    // Write your code here
    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

Just perform AND operation of the number with 1 left shifted by the position num and check if it is non zero or not. If non-zero, bit is set, else bit is not set.